an apple of discord 直译为纠纷的苹果，我们将它理解为“祸根；争斗之源；不和之因”。

【例句】
Everyone said I was an apple of discord.
他们都说我是个祸根。

He threw us an apple of discord, we soon quarreled again.
由于他挑起了争端，我们马上又吵了起来。