文化生态学与人类生态学的不同之处在于它强调文化被修改的适应过程。

"Parental investment is the key to understanding the origins of sex differences."

志向远大之人，必须谨慎选择自己所承担的任务，有才华之人，必须选择一个值得投靠的人。

We must invest in the next generation of farmers—they hold the future of food in their hands.

你的嘴说不出话是因为我。