单词：biological decontaminant
单词：biological decontaminant 相关文章
Welcome to the second part of our Business English Pod series on how to support your position or argument in meetings. Our friend Jack is giving an update on the Costa Rican project. Dan is against the idea, because as production manager, he doesnt w
商务英语会议解析
第一章 练习41 Exercise 1-41：Supporting Words Exercise 1-41: Supporting Words For this next part of the intonation of grammatical elements, each sentence has a few extra words to help you get the meaning. Keep the same strong intonation that yo
美式英语正音训练
吃鸡肉时，你知道鸡身上的哪个部分是最好的吗？科学家的回答是：眼睛。科学发现，鸡的视网膜锥(体) 数量比人类多，因此可以感知更多的色彩。 Super Chicken Vision Bring home a bucket of fried chic
60秒科学
A couple of studies on perception. First, theres now visual data to back up the idea that everything looks kinda gray when you feel blue. Researchers examined how the retina responds to different black-and-white contrast situations. They did the test
Scientific American(七)月
Afterglow Heres an experiment you can try: look at something bright relative to its surroundings, such as a lamp or a sunny window, for ten seconds without blink ing . Then shut your eyes and cover them over with your hands. You will find that the la
英语听力文摘 English Digest
In this Moment of Science Don gives Ya?l a neat trick to play on her brain. You might want to try it, too. D: Here's a simple demonstration you can do with cool implications. Find a large object that is brightly colored--let's make it a green door. S
英语时差8，16