洪水的英语,floodwaters是什么意思,floodwaters中文翻译,floodwaters发音、用法及例句

•floodwaters

floodwaters发音

英：　　美：

floodwaters中文意思翻译

retract和retreat的用法有什么区别呀？

retract v. 收回，撤销（已说的话或已答应的事） He retracted his words.

使缩回，使缩入 The sea otter can retract the claws on his front feet.

retreat v.n 撤退 （军队）；后退；离开；范围缩小 例 The flood waters are slowly retreating.撤回计划，多用于书面表达，股价下跌

water waters 论不可数名词加s的意义

当不可数名词表示具体案例时，则“可数名词化”。如a knowledge of history, a fire, 3 coffees