试图确定新几内亚的狩猎者和采集者面临着一个众所周知的难题：界定什么是狩猎者-采集者群体。

Attempts to identify New Guinean's hunter-gatherers face the well-known difficulty of defining what constitutes a hunter-gather group.

youdao

什么是快乐、天真和狠心？

What is gay and innocent and heartless?

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什么是特殊的思考方式和行动方式呢？

What are these special methods of thinking and acting?

youdao

We could just collect a bunch of data. For a material .What's the volume it occupies at some pressure and temperature?

对一种物质我们可以得到一系列测量数据,在给定的温度和气压下,它的体积是什么？

麻省理工公开课 - 热力学与动力学课程节选

So you have to think, first of all, what you want the best for yourself, and in food , in other things, too.

你得考虑，首先，你自己最想要的是什么，在食物和其他方面。

问上门厨师 - SpeakingMax英语口语达人

I've got two parameters, they're separated by a comma. Ah, right. Sorry?

我说的是什么？20和56对吧？注意格式,我有两个参数，它们由一个逗号隔开？

麻省理工公开课 - 计算机科学及编程导论课程节选