电子磨砂机

A: Whoa, I never saw a meter like this before; how do you use it? B: It's simple, once you do it a few times. Do you know how the old one worked? A: I never used a parking meter before. B: So we start out by deciding whether you will use cash or a cr

发表于:2018-11-30 / 阅读(175) / 评论(0) 分类 英语情景对话-大学生活

A: Excuse me, could you help me figure out how to use this new parking meter? B: Sure, it was confusing for me also. Have you ever used a regular meter? A: Yes, I understood the old one. B: Well, on this one you can use coins or a debit or credit car

发表于:2018-11-30 / 阅读(186) / 评论(0) 分类 英语情景对话-大学生活

A: I want to know how to buy something from this machine. B: Yeah, the new ones can be tricky. What are you trying to buy? A: I want to buy one of those snack things. B: Are you ready to go? A: I'm clear so far. B: The money goes in the slot over the

发表于:2018-11-30 / 阅读(167) / 评论(0) 分类 英语情景对话-大学生活

A: I've never seen a machine like this before and need some help. B: Sure, no problem. What are you trying to get? A: I want to buy a drink. B: OK. This machine needs you to use that change machine first to get correct change. A: I've got the correct

发表于:2018-11-30 / 阅读(167) / 评论(0) 分类 英语情景对话-大学生活

A: Can you help me figure out how to use this machine? B: Yes, I would be happy to help. What do you want to buy? A: I want to buy that candy. B: OK. So this machine will make change if you need it. Do you have your dollars ready? A: Yeah, so far, so

发表于:2018-11-30 / 阅读(159) / 评论(0) 分类 英语情景对话-大学生活

A: May I help you? B: I need to copy some pages in my book. A: The copier is right over there, in the corner. B: Do I need to pay to use it? A: You have to pay to use the copier. B: How much do you charge? A: You need to pay ten cents for every copy.

发表于:2018-12-02 / 阅读(143) / 评论(0) 分类 英语情景对话-图书馆

A: What can I do for you? B: I would like to use the copy machine. A: The machine is over there. B: Do I have to pay to use the machine? A: Yes, you will have to pay to use it. B: How much? A: It costs ten cents a copy. B: Am I limited to a certain n

发表于:2018-12-02 / 阅读(154) / 评论(0) 分类 英语情景对话-图书馆

A: How may I help you today? B: I need to make some copies. A: The copier is right over there. B: Does it cost to use it? A: We do charge to use the machine. B: How much does it cost? A: We charge ten cents a copy. B: How many copies am I allowed to

发表于:2018-12-02 / 阅读(132) / 评论(0) 分类 英语情景对话-图书馆

In the square outside the British Library in London is a sculpture of Sir Isaac Newton - The first man who asked why apples seem always to fall towards the centre of the earth. Maybe they chose it for the spot because it shows a great scientist at wo

发表于:2018-12-07 / 阅读(130) / 评论(0) 分类 英文杂志-Magazine

This is Scientific American's 60-Second Science. I'm Sophie Bushwick. Got a minute? The shortest distance between two points may be a straight line, but try telling that to electrons: when current flows down a wire, these particles zig and zag, movin

发表于:2018-12-24 / 阅读(148) / 评论(0) 分类 Scientific American(九)月

Three Scientists Win Nobel Prize in Chemistry Three scientists have won the Nobel Prize for chemistry for their work to simplify and improve the imaging of biomolecules. 三位科学家因为在简化和改善生物分子成像方面的成就获得了诺

发表于:2019-01-03 / 阅读(219) / 评论(0) 分类 2017年VOA慢速英语(十)月

A: I need to go to the ATM. B: So, why dont you? A: I have no idea how to use the ATM. B: What do you mean? A: This will be my first time using an ATM. B: I can help you with that. A: Explain to me how to use it. B: Just put your card into the machin

发表于:2019-01-11 / 阅读(150) / 评论(0) 分类 英语情景对话-银行

A: I have to use the ATM. B: Is there a problem? A: I dont know how to use it. B: What are you talking about? A: I have never used an ATM before. B: I can show you how to use it. A: How do I use it? B: You need to push your card into the machine. A:

发表于:2019-01-11 / 阅读(128) / 评论(0) 分类 英语情景对话-银行

A: I need to use the ATM. B: Whats stopping you? A: Im not sure how. B: I dont understand. A: Ive never used one before. B: I can help you figure it out. A: What do I have to do? B: Slide your card into the machine. A: Then what? B: You need to type

发表于:2019-01-11 / 阅读(155) / 评论(0) 分类 英语情景对话-银行

[0:0]efficiency效率,功效 [0:12.1950]elaborate elastic elbow elderly精心计划的,详尽的 橡皮图,松紧带 肘,肘部 较老的,年长的 [1:2.6076]elect electrical electron选举,推选 电的,电气科学的 电子 [1:41.1372]electronic elegant element elementary [2:36.2790]el

发表于:2019-01-16 / 阅读(211) / 评论(0) 分类 闭着眼睛飘单词 四级词汇

But this still doesn't explain why light is able to pass through glass rather than being absorbed as with most solids. 但是这还是不能解释为什么光可以穿透玻璃而不是像其他大多固体那样被吸收。 For that, we need to go a

发表于:2019-01-17 / 阅读(116) / 评论(0) 分类 TED演讲教育篇

Its a familiar sight in many of the UKs airports long queues of people waiting to go through security to catch their flights. What if there was a simple and quick way to avoid all the hassle of having to take off all metal objects, coats, belts and s

发表于:2019-01-19 / 阅读(115) / 评论(0) 分类 英语杂谈

Early effect 厄利效应 Early failure 早期失效 Effective mass 有效质量 Einstein relation(ship) 爱因斯坦关系 Electric Erase Programmable Read Only Memory(E2PROM) 一次性电可擦除只读

发表于:2019-02-05 / 阅读(142) / 评论(0) 分类 实用英语

Background carrier 本底载流子 Background doping 本底掺杂 Backward 反向 Backward bias 反向偏置 Ballasting resistor 整流电阻 Ball bond 球形键合 Band 能带 Band gap 能带间隙 Ba

发表于:2019-02-05 / 阅读(128) / 评论(0) 分类 实用英语

The Microscopic Technique Each advance in microscopic technique has provided scientists with new perspectives on the function of living organisms and the nature of matter itself. The invention of the visible light microscope late in the sixteenth cen

发表于:2019-02-25 / 阅读(145) / 评论(0) 分类 双语有声阅读
学英语单词
AA Gun
Achaemenians
akhtars
Alcmene
annealed zone
arcanol
asheim
asota tortuosa
atrspine flush
authentication mechanism
automatic phase control system
battle-cruisers
Bielschowsky sign
break-off core
bush dermatitis
canning industry
carcanets
cardiac thrombosis
carrol(l)ite
centaurea nigras
center shed
chortosterol
Cirsium maackii
climate limits of crops
coherence raman scattering
color coding paints
commune with nature
connecting elbow
Core iX
crewels
daccas
deaths
directional light
door nail
Doric dialect
drosophila (drosophila) xanthogaster
dye-back film
eruptive seborrheic keratoses
exagon
exceptionists
ferroresonant power supply
fingerpick
focus pull
gallabiehs
gambroons
girdle scone
heavenless
import-biased growth
international mobile subscriber identity
Konjuh
Like knows like
macguffie
magnetic escapement
magnification for rapid vibrations
main transformer
mbret
mesocortex
metallized aluminium
metrification
micro stilb
misgreeting
nephropsid
neutral gyro
nonmonotonic
parasitic stress
parka squirrel
precipitation-hardened alloy
product-pay-back scheme
proper time of harvesting
proximal interphalangeal joint
Pteracanthus dryadum
pulse-code modulation (pcm)
Pynchonesque
respirability
Ronghui
ruehl
sagitate
Salicales
SCIC
self-commutation
sheep' shank
Sri Mohangarh
starch hyacinths
subaided
syngeneic graft
Taraxacum goloskokovii
temperature gradient method
translucent vitreous silica
tridactylism
truthsome
valve of pulmonary trunk
varicectomy
veau
vertical stacked extractor
vxvmi
wet basin
wild relatives
Windy City
woodworking rip saw
yang collapse
youatt
zinc-coated wire