There was a smile on Alfie's face as he looked at what he had done.

当阿尔菲看到他所做的事情时，脸上露出了笑容。

Psychologists looked at what grade school students did after they were given different types of verbal praise.

心理学家观察了小学生在得到不同类型的口头表扬后的表现。

At what age did you start learning to play the piano?

你是从什么年龄开始学钢琴的？

You need to know at what RPM your car reaches maximum torque.

你需要知道你的车在什么转速下达到最大扭矩。

Li Bai was very surprised at what the old woman was doing.

李白对老妇人的所作所为感到非常惊讶。

I'm not overstating the danger: look at what's happened to the labor force.

我并没有夸大危险：看看劳动力发生了什么。

Hard times may hold you down at what usually seems like the most inopportune time.

艰难的时刻可能会在最不合时宜的时候让你陷入困境。

Maybe I can't finish digging all the way through the earth, but look at what I have found.

也许我不能一路挖完整个地面，但看看我发现了什么。

What makes a group good at what it does?

一个团队的优劣取决于什么呢？

Excel at what you do.

精通你所做的。