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
acclimation
accum.
acknowl
affinities
alumino-nicket
amplitude-time converter
armwood
average normal ear
berneta
binder system
Burger's vector
business register
Chiari-Frommel syndrome
chopness
churches of ireland
cinder spout
closed-loop design principle
compactificationof a topological space
computer-oriented languages
coxalls
deproteinate
depth of chill
descriptive level
dissevered
DNA test
employee-information
engaged signal, engaged tone
enoyl-CoA hydratase
entrance ticket
ephemeran
ethnoburb
ethylene diphenyl ether
ever-widening
excantation
femtoweber
fire protection requirement
firmware monitoring
five-level startstop operation
Forth, River
Francke's needle
galenisms
GMCP
goshikis
high strength corrosion-resistant plate steel
induced bacterial antagonism
informal logic
jewish ritual dance (assyria)
johannis
line function
long hemp
madhere
Make a mint
manganese red
mavicas
metapeptone
myotrophic
nelivaptan
Nizam al-Mulk
nonaqueous solution
nonchromatographic
nonconformities
nonmentholated
ovarian ligaments
Painting The Tape
parity detector
patients rights
phase boundary potential
pichard
pink-tinged
porporino
post office box number
powder-in tube (pit)
purgy
quenched zone
Robert Orr
scarab beetle
scientific apartheid
seabylle
shewbread
soulcraft
spaghetti western
special perturbations
Spiradiclis microcarpa
stripping palm fruit
superathletes
ten-petaled anemone
three-axial magnetometer
tomato powder
triangular oscillation blade
Tylophora dielsii
under-weigh
unsmelt
Uranotaenia macfastanei Edwards
us venture capital
Vauban
vehiculary
veterinary hospital
vibro washer
walkid-lookie
weighted least square (wls) method
wireless telegraphs
yolk sphere