软弱的英文：
weak
feeble
flabby

参考例句：

To deprive of virility or spirit;emasculate.
使无男子气使丧失精力或精神;使软弱

It's because I was very soft and feeble, and in addition I was a poor loser.
因为我很软弱，而且我是不能输的。

He had been instantly shocked by the fragility of his opponent and the ease of his advantage.
他发现对方软弱得毫无抵抗力，自己不费吹灰之力占了上风，顿时大吃一惊。

To deprive of virility or spirit; emasculate.
使丧失精力或精神;使软弱。

Don't be such a weakling!
别那麽软弱!

His not only weak but also admire vanity.
他既软弱又爱慕虚荣。

A person regarded as weak, foolish, or stupid.
笨蛋被看作软弱、傻或愚蠢的人

Casablanca was the terminus of a long, rickety railway line.
卡莎布兰卡是一长而软弱的铁路线的终点。

Don't take his patience as a sign of weakness.
别把他的耐心看作软弱的表示。

She lacks the indefinable charm of weakness.
她缺少那种难以形容的软弱的媚态。

weak是什么意思：
adj. 疲软的；虚弱的；软弱的；愚钝的；不牢固的；淡薄的

a weak radio signal; a weak link.
微弱的无线电信号；薄弱的连接。

He has weak eyes.
她的视力不佳。

The spirit is willing But the flesh is weak
力不从心。

feeble是什么意思：
adj. 虚弱的，无力的；懦弱的，薄弱的

This is a feeble argument.
这是一场无益的争执。

It's a feeble excuse.
这是一个软弱无力的借口。

This is a particularly feeble argument.
这个论点尤其薄弱。

flabby是什么意思：
a. 软弱的,没气力的,不稳的,松弛的

I became rather flabby after I stopped doing exercises regularly.
＂停止了经常运动后，我的肌肉变得相当松弛了。＂

I became rather flabby after I stopped playing football regularly.
停止了经常踢球之后，我的肌肉变得相当松弛了。

Too little protein in your diet makes your muscle soft and flabby.
饮食中蛋白太少会使你的肌肉松驰。