We do not know why, although shifting climate may have favored stealing skills from others rather than learning them anew (Richerson and Boyd 2005).

我们不知道它为什么这么做，也许变化的气候使得从别人那里偷学点技巧比自己发明出一个更为有利(Richerson and Boyd 2005)。

youdao

We do not know why, although shifting climate may have favored stealing skills from others rather than learning them anew (Richerson and Boyd 2005).

我们不知道它为什么这么做，也许变化的气候使得从别人那里偷学点技巧比自己发明出一个更为有利(Richerson and Boyd 2005)。

youdao