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Another belief is based on fact. The expression is "One rotten apple spoils the barrel." When an apple begins to go bad, it ruins all the other apples around it in the container.
另一个信条则是基于事实：“One rotten apple spoils the barrel”（一只烂苹果烂一筐苹果）。当一个苹果开始腐烂，它会毁掉同一容器中它周围的其它苹果。
The expression has come to mean that one bad person in a group can cause everyone to act bad.
这个短语的引申意义是团队里一个很逊的人会使每个人的表现都很逊。
