土壤水分毛细上升

Agriculture Report - UN Says Food Production Must Rise; How 'Fertilizer Trees' Could Help 农业报道 - 联合国称到2050年粮食产量必须增加7成 This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道

发表于:2018-12-07 / 阅读(188) / 评论(0) 分类 2011年VOA慢速英语(十一)月

Agriculture Report - Getting to the Root of How to Water Trees This is the VOA Special English Agriculture Report. Some trees can survive a long time without water. Think of trees that grow in the desert. But other trees may need more moisture than t

发表于:2018-12-07 / 阅读(194) / 评论(0) 分类 2011年VOA慢速英语(八)月

Asian Bacteria Threatens Florida Orange Trees 亚洲细菌威胁到佛罗里达橘子树 Florida's citrus fruit industry is facing a serious threat from a bacteria carried by an Asian insect. The widespread infestation again highlights the danger of

发表于:2018-12-08 / 阅读(127) / 评论(0) 分类 VOA标准英语2014年(八月)

Computer scientist Shwetak Patel and his team are developing new sensing systems. The initial focus was really around energy and water monitoring.They built a new generation of smart sensors that monitor electronic interference on a homes power line

发表于:2018-12-08 / 阅读(105) / 评论(0) 分类 VOA标准英语2018年(六月)

Some cacti, like the saguaro, grow to tree size, but true trees need more moisture than most desert environments can supply, so they are scarce on deserts. 一些仙人掌,如撒瓜罗,能长到橡树那么高。但真正的树却需要比大多数

发表于:2018-12-27 / 阅读(144) / 评论(0) 分类 英语听力小短文走遍全世界

Epidermal growth factor - a cytokine that stimulates epithelial cell proliferation. Epinephrine - a neurotransmitter substance found at all adrenergic synapses (nor epinephrine or epinephrine). It is

发表于:2019-01-03 / 阅读(195) / 评论(0) 分类 医务英语

Inflammation - is a whole complex of events which occur in sequence, in response to injury. Tissue damaged by bacteria, chemicals, heat, trauma etc, release histamine and bradykinin and serotonin whic

发表于:2019-01-03 / 阅读(160) / 评论(0) 分类 医务英语

Basal lamina - a term used to describe the different layers which make up the basement membrane. These different layers of the basement membrane, the lamina lucida and lamina densa are only visible wi

发表于:2019-01-03 / 阅读(176) / 评论(0) 分类 医务英语

Mars Rover to Begin Taking Soil Samples This Week Jessica Berman NASA engineers say the Mars rover will begin taking its first soil samples as soon as it departs the landing platform . Engineers say t

发表于:2019-01-04 / 阅读(183) / 评论(0) 分类 VOA2004(上)--各类新闻

head 头 throat 喉咙,咽喉 armpit hair 腋毛 nipple 乳头 chest 胸部 pit 胸口 navel 肚脐 abdomen 腹部 private parts 阴部 thigh 大腿 neck 脖子 shoulder 肩 back 背 waist 腰 hip 臀

发表于:2019-01-05 / 阅读(177) / 评论(0) 分类 英文语法词汇

亚洲细菌威胁佛州橘树 Florida's citrus fruit industry is facing a serious threat from a bacteria carried by an Asian insect. The widespread infestation again highlights the danger of transferring non-native species to American soil. 佛罗里达

发表于:2019-01-19 / 阅读(129) / 评论(0) 分类 VOA双语新闻 2014年9月

It's similiar to a pregnancy test: a drop of liquid on a strip of paper causes an easily seen color change. But imagine that kind of simple, cheap technology employed in testing for pollution or health issues anywhere and on the cheap. Researchers at

发表于:2019-01-20 / 阅读(146) / 评论(0) 分类 Scientific American(八)月

For those of us lucky enough to always have enough food and water, it may be hard to imagine living through a drought. A drought occurs for a variety of reasons, usually including a lack of rainfall and warm temperatures.Soil moisture severely dwindl

发表于:2019-01-26 / 阅读(139) / 评论(0) 分类 英语听力文摘 English Digest

We all make resolutions every year to keep fit whether we have diabetes or not. The difference is that as people with diabetes, we need to keep fit, and we know that even if we don't do anything about it. One only has to read the medical abstracts an

发表于:2019-02-03 / 阅读(228) / 评论(0) 分类 实用英语

护士:早上好! Nurse: Good morning. 病人:你好! Patient: Good morning. 护士:请问哪里不舒服? Nurse: What seems to be the problem? 病人:高烧,感觉糟透了。 Patient: Im running a high fever and feeling terribly bad. 护士:这种情况出现有多久了? Nurse

发表于:2019-02-06 / 阅读(143) / 评论(0) 分类 英文语法词汇

Drought For those of us lucky enough to always have enough food and water, it may be hard to imagine living through a drought . A drought occurs when for a variety of reasons, usually including a lack of rainfall and warm temperatures. Soil moisture

发表于:2019-02-16 / 阅读(105) / 评论(0) 分类 英语听力文摘 English Digest

听歌学英语:All Rise全体肃立 [00:16.68]BLUE [00:18.55]All Rise [00:59.78]Yo, yo [01:00.31]Yo, yo [01:02.13]Your honour please [01:03.78]Gotta believe what I say (say) [01:06.77]What I will tell (tell) [01:08.66]Happened just the other day (da

发表于:2019-02-18 / 阅读(149) / 评论(0) 分类 听歌学英语

只要讲英语就会用得上的词汇 闪光之说: 1、shine: 照耀,指光稳定发射; 2、glitter: 闪光,指光不稳定发射; 3、glare: 耀眼,表示光的强度最大; 4、sparkle:闪烁,指发射微细的光度。 打破之说

发表于:2019-02-21 / 阅读(126) / 评论(0) 分类 实用英语

Plants in the Deserts Some cacti, like the saguaro, grow to tree size, but true trees need more moisture than most desert environments can supply, so they are scarce on deserts. Close to streambeds, cottonwoods can sometimes be found. Though these st

发表于:2019-02-25 / 阅读(120) / 评论(0) 分类 双语有声阅读

Sugar bowls and hole 孔隙是岩土固体矿物颗粒间的空间。岩土中直径大于1毫米、重力水可于其中自由运动的孔隙,是大孔隙(macro-pore,large pore)。岩土中直径为0.01~1毫米、重力水和毛管水可存其

发表于:2019-03-09 / 阅读(171) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
atomic number 5
attentioner
AYSOS
backening
balmily
bathyphreatic cave
Battle of Pydna
bayadera brevicauda
Bermo Res.
carbunculations
cavity cell
Changjin
chart showing occupation of track
cinescintigraphy
citational
citator
class prejudice
codiscovering
connective tissue cells
continuity condition
Cooling-Off Rule
corianders
crystal-controlled frequency
delivery path
edwyn
electric towing winch
emunctories
estimater
fananserin
filter cigarette
finite morphism
flummeries
fuel saving device
gentiobiuronic acid
genus quiscaluss
geomagnetic meridian
graphitized bronze
hibbard
high repetition laser illuminator
history of verse
ion exchange absorbent
ischnopsyllus indicus
janet reno
jnos
leave break
lifting
low-purine diet
magnetic disk storage unit
Marseilles fever
media modeling
missing locking
moon's path
Myosotis scorpiodes
number-theoretic function
Oiba
oraviron
orchiocele
owner of record
oxide fuel reactor
paint-grade
pencil of quadratic curves
peroxidase-antiperoxidase technique
persistent fever injuring yin essence
polychromate
porocel
postrecession
program comparison
psilostrophe
pump screen retainer
rated data determination
related sections
rolled in scrap
sandy alumina
scale level
secondary earner
seoyang-ni (yuweonjin)
settle the stomach
shit-bowl
skepping
steam-jet pump
strain-measuring bridge
stress sheet
superharvest
supply terminals
tape group
tear type
Tectariaceae
temperature measuring station
Testivin's sign
topstations
Trypaucheninae
turbulent combustion
ubiquitination
undistored power
unrepellable
uprighteously
ventricle of olfactory bulb
vulvar gonorrhea
walkerman
walkshed
working families tax credit
xvier