The writer observes that survival is a difficult endeavor and that the world can sometimes seem harshly hostile.

作者发现，人类需要通过努力而生存,但这个世界往往是非常残酷的。

耶鲁公开课 - 旧约导论课程节选

Keep it up! I know you can do it. You're working very hard.

再接再厉哦！相信你行的。你学得非常努力。

It depends on 课堂 - SpeakingMax英语口语达人

It turns out that if you start learning a language, a second language is where most of the work's been done, within the first few years of life you're fine.

如果你在出生的头几年里开始学习一门语言,非常努力地学习了第二门语言,那么你一切正常

耶鲁公开课 - 心理学导论课程节选

What this class requires is a very different kind of effort.

本课程需要的是一种非常不同的努力。

哈佛公开课 - 幸福课课程节选

You get that sense that people are working very hard there.

你会有种感觉，那儿的人都非常努力地工作着。

关于唐人街 - SpeakingMax英语口语达人

If you want to get like As, you have to work hard for it.

如果你想得到A，那你得非常非常刻苦努力。

是考试期间 - SpeakingMax英语口语达人

A very different kind of effort to other class.

与别的课程非常不同的努力。

哈佛公开课 - 幸福课课程节选