1. in awe

awe的意思是敬畏；惊奇，惊叹，常见表达有 in awe/in awe of：

I've always held musicians in awe.

我对音乐家们总是肃然起敬。

As children we were rather in awe of our grandfather.

小的时候，我们对祖父非常敬畏。

2. tune up

它的本意是(给乐器)定标准音，tune-up是名词形式，表示把（发动机）调试到最佳运转状态：

The engine needs a tune-up, and can you test the brakes too, please?

发动机需要调试一下，还有请再测试一下刹车好吗？

tune-up也有“为…做好准备“的意思：

a tune-up game/fight

预备游戏／搏击

In a tune-up for his presidential race, he ran for a seat in Croatia's parliament.
为了准备竞选总统，他先参加了克罗地亚议会议员的竞选。

3. learn a/your lesson

learn a/your lesson表示接受教训，吸取教训。

We can learn important lessons (= gain new understanding) from this disaster.

从这次灾难中我们可以汲取重要教训。

（来源：沪江英语）