在每一次物种大灭绝后,都有一次突然的进化爆发,因为会有新物种出现来填补灭绝创造的生态位。
Following each mass extinction, there is a sudden evolutionary burst as new species develop to fill the ecological niches opened by the event.
它是理论家在每一次巧妙的旅行之后返回的出发点。
It is the starting point to which the theorist returns after every ingenious excursion.
美国和其他西方国家在每一次移民浪潮中都经历了适应性问题。
The United States and other western countries have experienced adjustment problems with each new wave of immigrants.
A cohort study means you take the same group of people and follow them every five years for that period of time.
定群研究意味着你只有一组研究对象,然后在研究期间每五年进行一次记录数据
If I want my kid to do something, I should say yes one out of every ten times.
如果我想肯定孩子的某种行为,我就应该在他的每十次提议中同意一次。
OK, you say, come on, I've seen these all the time. Every time I type something into my program, it does one of these things, right?
好了,或者你要说,我总是能看见这些,每一次我在程序里输入一些内容的时候?
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