back fall的用法和樣例：
例句
- Feeling like a complete wimp for ever having asked, I set off back up the slope.
我這麼問了后，感覺自己就像廢物，只能重新出發回到山坡上。 - It was at midnight that Ichabod began to go back on horseback along the sides of the hill.
當伊卡伯騎上馬開始沿著小山坡回家時，已是午夜時分了。
辭彙搭配
- fall back on 求助於
- fall back upon 有 ... 可以依靠...
- fall back 後退
