每个迷人的姑娘都清楚，成功的关键就是减少竞争。

Every charming girl knows that the key to success is to reduce competition.

youdao

上好体育与健康课的关键就是要提高学生的学习能力，和开发学生的智力。

The key to teaching physical education and health course well is to improve the students' learning ability and develop their intelligence.

youdao

幸福的关键就是去选择幸福。

The key to happiness is to choose happiness.

youdao

Yeah, that's the key thing, letting go of the judgments and getting back to the breath, you just nailed it.

对，这就是关键，抛开偏见,恢复呼吸，就大功告成了。

普林斯顿公开课 - 人性课程节选

But there's a key line of code that I lost over a moment ago and that was this one here.

但是我刚才漏了一行关键的代码,就是这里的这一行。

哈佛公开课 - 计算机科学课程节选

But it shows that we will draw to the thought that the key part of the body is the brain.

我们由此可知,身体的关键部位就是大脑。

耶鲁公开课 - 死亡课程节选