SSS 2011-07-14
时间：2019-01-08 作者：英语课 分类：Scientific American(七)月
英语课
This is Scientific American’s 60-Second Science. I’m Steve Mirsky. Got a minute?
Former major league pitcher 1 Antonio Alfonseca had six fingers on each hand. One of his coaches was once asked about the consequences of Alfonseca having six fingers and replied, “He can’t flip 2 you off.” Think about it.
Well, neither can many moles 4, because most individuals of the type called talpid moles also apparently 5 have six fingers on each foot. Or at least it looks that way. Now a study shows that they really only have the regular old five true fingers. The real thumb looks like the other four fingers, and what appears to be the thumb is actually a much larger-than-normal version of the radial sesamoid bone of the wrist. The finding is in the Royal Society journal Biology Letters.
The fake thumb has no joints 6, a dead giveaway that it’s not a real finger. And molecular 7 markers show that the five true fingers develop together in a mole 3 embryo 8, with the outsized sesamoid cropping up later. The arrangement is probably an advantage for an animal that spends a lot of time digging and doesn’t convey displeasure with hand signals.
Thanks for the minute. For Scientific American’s 60-Second Science, I’m Steve Mirsky.
n.(有嘴和柄的)大水罐；(棒球)投手
- He poured the milk out of the pitcher.他从大罐中倒出牛奶。
- Any pitcher is liable to crack during a tight game.任何投手在紧张的比赛中都可能会失常。
vt.快速翻动；轻抛；轻拍；n.轻抛；adj.轻浮的
- I had a quick flip through the book and it looked very interesting.我很快翻阅了一下那本书，看来似乎很有趣。
- Let's flip a coin to see who pays the bill.咱们来抛硬币决定谁付钱。
n.胎块；痣；克分子
- She had a tiny mole on her cheek.她的面颊上有一颗小黑痣。
- The young girl felt very self- conscious about the large mole on her chin.那位年轻姑娘对自己下巴上的一颗大痣感到很不自在。
防波堤( mole的名词复数 )； 鼹鼠； 痣； 间谍
- Unsightly moles can be removed surgically. 不雅观的痣可以手术去除。
- Two moles of epoxy react with one mole of A-1100. 两个克分子环氧与一个克分子A－1100反应。
adv.显然地；表面上，似乎
- An apparently blind alley leads suddenly into an open space.山穷水尽，豁然开朗。
- He was apparently much surprised at the news.他对那个消息显然感到十分惊异。
接头( joint的名词复数 )； 关节； 公共场所（尤指价格低廉的饮食和娱乐场所） （非正式）； 一块烤肉 （英式英语）
- Expansion joints of various kinds are fitted on gas mains. 各种各样的伸缩接头被安装在煤气的总管道上了。
- Expansion joints of various kinds are fitted on steam pipes. 各种各样的伸缩接头被安装在蒸气管道上了。
adj.分子的；克分子的
- The research will provide direct insight into molecular mechanisms.这项研究将使人能够直接地了解分子的机理。
- For the pressure to become zero, molecular bombardment must cease.当压强趋近于零时，分子的碰撞就停止了。