拓展：
1. shit happens/ under the weather/ down in the dumps/ feeling blue 觉得一切都很不好
2. rags to riches/ from zero to hero 逆袭
3. hang me out to dry 别晾着某人
4. hide 兽皮 / animal skin 动物皮
5. runaway success 爆款/ runaway 一举成功
6. get off the ground 有进展
7. through and through 彻彻底底
e.g. I’m Chinese through and through. 我是彻彻底底的中国人。
e.g. He’s a jerk through and through. 他是一个彻彻底底的混蛋
8. There is no such thing as a free lunch. 天下没有免费的午餐
9. a heart of gold 金子般的心
10. trillion 万亿
e.g. In a short time the number of cells is more than a trillion. 不久细胞的数量就超过了一万亿。
11. astronmical 天文数字
e.g. astronomically high rents 天价租金
12. bajilion: an extremely large but unspecified number, quantity, or amount.
13. a dime a dozen 白菜价
14. go downhill生活变得越来越难
go south : relationship went south
on the rocks 关系不好，塑料姐妹花
15. that a big if 不确定
16. grandpa on my mother’s side
grandpa on my father’s side