by then 造句

I'm sure that everything will be better by then.
我相信到那时一切都会更美好。
Return at five, I shall be ready by then.
你5点钟回来，那时我将准备好。
They 'd lived here for ten years by then.
到那时为止他们住在这里10年了。

He used dry straw in place of a bed.
他用干草代替床。
Nylon is widely used in place of cotton nowadays.
现在尼龙已被广泛地用来取代棉花。
protective stockings worn with or in place of boots
配着靴子或代替靴子穿的保护性长袜