单词:air-blast nozzle
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英语场景口语:是不是智力有问题 我的记性很差,这在班里可是出了名的。 【口语要素1】I have a poor memory. 比如别人刚刚说完自己的名字,我就给忘了。 【口语要素2】It slipped my mind. 或者在演
By Kari Barber Dakar 06 July 2007 After years of turmoil and economic hardship, the small West African nation of Guinea Bissau is facing a health challenge caused by the absence of iodine in the nation's diet. In countries where iodine is not already
D:I feel bad for male squirrel monkeys. Y:What?Why? D:Because they cant detect the colors red and greentheyre red-green colorblind. Y:Maybe,but scientists at the University of Washington used gene therapy to make squirrel monkeys produce proteins tha
Watercolor Pendulum When I'm falling down Will you pick me up again? When I'm too far gone Dead in the eyes of my friends Will you take me out of here? When I'm staring down the barrel When I'm blinded by the lights When I can't see your face Take me
We can probably all recount at least a dozen weird and alarming things parents, teachers, and older siblings told us about our eyes when we were kids. For instance, we'd be permanently cross-eyed if we didn't stop making those faces at our brother or
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