Ants swarmed all over the rotten apple.

烂苹果上爬满了蚂蚁。

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The rotten apple injures its neighBors.

腐烂的苹果伤及邻果。

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Example: : Jimmy is the rotten apple that spoils the barrel in my class, I wish I didn't have to be his teacher all year.

例句：吉米是班里的老鼠屎，我希望今年不用作他的老师。

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If HP looks bad, this stock is the worst rotten apple in the garbage pail.

FORBES: If Hewlett-Packard Looks Bad, AutoZone Looks A Lot Worse

The garish psychedelic colors on black, the confused sense of scale and perspective, the oversized, disfigured fork and rotten apple.

FORBES: Magazine Article

These rotten executives would hurt Apple by employing the same mistakes of their peers.

FORBES: Can Apple Survive Without Steve Jobs?