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Concrete is one of the most widely used materials on the planet. And this consumption comes with a heavy ecological price. Rouzbeh Shahsavari, a materials scientist at Rice University. Around 5 to 10 percent of total CO2 emissions comes from concrete
2017年Scientific American(一)月
Zika virus infection during pregnancy has been linked to the abnormal brain development called microcephaly. Now a study finds more evidence for the connection. Researchers at the CDC in the U.S. and the National Health Institute in Colombia found th
2017年Scientific American(一)月
This product is void of defects. 这产品没有缺陷。 void表示空的，be void of表示缺少，没有。上句其实等于： This product has no defects at all. defect表示缺点，缺陷，不足之处。defect可做名词也可做动词，做
蒋健棠英语实用句子
Birth Defects Rise in Former Iraqi Battleground Five-year-old Lujane is one of hundreds of children in Fallujah who have been born since 2004 with severe birth defects. Her father says Lujane suffers from multiple afflictions that Iraqi doctors strug
VOA标准英语2012年(十二月)
（一）原因1.A number of factors are accountable for this situation. A number of factors might contribute to （lead to ）（account for ） the phenomenon（problem）。 2. The answer to this problem involves many factors. 3. The phenomenon ma
四六级写作指导
WASHINGTON, March 4 (Xinhua) -- New data suggest that the epilepsy drug Topamax (topiramate) and its generic versions increase the risk for the birth defects cleft lip(兔唇) and cleft palate in babies born to women who use the medication during pre
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