英语语法分析

We know, however, that contemporary hunter-gatherer societies control their population in a variety of ways.

然而，众所周知，当代的采集狩猎者以各种方式控制其人口。

FOR most of man’s existence he has been a hunter-gatherer.

自人类出现以来，大部分时间是作为采集狩猎者。

Small, family-based groups came together, forming hunter-gatherer tribes.

以家庭为基础的小型团体走到了一起，形成捕猎者-采集者部落。