当实验种群在简单的实验室条件下建立起来时,捕食者往往会消灭它的猎物,然后自己也走向灭绝,因为没有东西可以吃。
When experimental populations are set up under simple laboratory conditions, the predator often exterminates its prey and then becomes extinct itself, having nothing left to eat.
只有那些可以在简单的事情坚持的人才可能成功。
这些实验是在简单浸泡的岩石上做的。
I think I have sort of two things to go together that are very simple, that doesn't matter where you live.
我有两点要讲,他们都很简单,无论你住在哪里都可以。
This is very simple but it's a great way to ask about a specific category among many different categories.
这是个非常简单的句型,但它在询问不同种类中某一特定类型的事物时是非常理想的句型。
And he defined the average in terms of not the sum divided by two, but he chose the geometric mean.
鲍林定义平均并不是,简单相加在除以二,他选择几何平均。
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