Or to rest your head. Now scientists say that by separating our heads from our bodies, the neck gave our brains a leg up in evolution.
现在科学家宣称脖子通过将我们的头部从躯干上分离开,给大脑的进化助了一臂之力。
What exactly do biologists mean when they say that they have observed evolution or that humans and chimps have evolved from a common ancestor?
当生物学家说他们观察到了进化,或者说人和黑猩猩是由一个共同祖先进化来的,他们要表达的精确涵义到底是什么?
Rather, he is just expressing laws. That is to say, the legal norms of a society and their development or evolution are determined by some objective necessity.
这就意味着,一个社会的法律规范及其演进是由一定的客观必然性所决定的。
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