There are some sentences that act like deadly silent ninjas, killing self-confidence and antagonizing your friends, family and colleagues—the worst thing is that you might not even realize it.

下面这几句话可以看成是致命的沉默忍者，抹杀自信，敌对朋友，家人和同事——最糟糕的的就是你甚至都意识不到。

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And back in Britain in 1943 it was her character rather than her skills or physical abilities that got her through her training in grenade throwing, silent killing and parachute jumping.

ECONOMIST: Nancy Wake

Known as the silent killer, ovarian cancer is the fifth leading cause of cancer death among women, killing 14, 600 annually.

FORBES: Leadership