You have to be of an age to be a fighting man. It's not necessarily defined for us.

必须达到最低年龄的要求,才能参军,不像我们现在这样

耶鲁公开课 - 古希腊历史简介课程节选

Sometimes it takes 4 or 5 years in order to get some level of competency.

有时候它需要4到5年才能达到一定的水平，

学第二外语的时候 - SpeakingMax英语口语达人

In the light of human mortality, the disinterest of the gods, the chanciness of life, what can man do to achieve happiness and immortality?

既然人生苦短,又没有什么神灵保佑,生死都只是随机事件,那我们怎么才能达到幸福和不朽呢

耶鲁公开课 - 古希腊历史简介课程节选

What's now the most efficient use of people's time, like how can people maybe be working on stuff not serially but I didn't say someone's working on launching a high school product on the photos and someone else is working on the thing every launch next to each, you know.

才能达到最高的工作效率，也许可以摒弃,连续工作的模式,我并不是说,他们是在开发一个小儿科的产品,有人负责建立相册,有人负责,下周要开启的项目。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

This is introducing a gene, it's a natural gene but it's not - it's a natural gene that's found in humans and is actually expressed all over your body in different levels, but you're concentrating it or over expressing it in one particular region of tissue in order to have a particular effect.

通过导入一个基因,这是一个天然基因但--,是一种于人体内发现的天然基因,在全身细胞中都有不同程度表达,但需要集中在组织的某一特定区域,表达或过表达,才能达到特定疗效

耶鲁公开课 - 生物医学工程探索课程节选

The citizens of such a city can only reach their telos or perfection through participating in the offices, in the ruling offices of a city.

这样一座城的公民,只能透过参与公职,才能达到他们的，Telos，或完善，而且是城市中统治阶级的公职。

耶鲁公开课 - 政治哲学导论课程节选

What concentration do I need to use to achieve that?

我要用多少浓度才能达到效果

耶鲁公开课 - 生物医学工程探索课程节选