护短的英文：
shield a shortcoming of fault

参考例句：

Justifying a fault doubles it．
护短是错上加错。

Justifying a fault doubles it
护短是加倍的错误

Justifying a fault doubles it.
护短使错误加倍。

Justifying a fault doubles it. ——Aesop
护短是加倍的错误。——伊索

shield是什么意思：
n. 盾；保护人；防护物
v. 保护；庇护；包庇；挡开

concrete for radioactive ray shielding
放射线屏蔽用混凝土

God is our shield.
神是我们的保护者。

It could then have served as a trusty shield.
它就可以成为一个可靠的屏障。

shortcoming是什么意思：
n. 缺点，短处

She had one shortcoming.
她有个缺点。

In the meanwhile, the modes have some shortcomings.
同时，他们对委托—代理问题的解决还存在着一定的缺陷。

Not being punctual is his greatest shortcoming.
不守时间是他的最大缺点。

fault是什么意思：
n. 缺点；毛病；故障；过错；发球失误；断层
v. 挑剔；弄错；产生断层

Justifying a fault doubles it
护短是加倍的错误

Every man has some fault.
人孰无过。

The mineralization is localized by faulting and shearing
矿化受断层和剪切带的控制。