內神通外鬼

英譯：
an inside job

例句：
The bank robbery was an inside job. (這起銀行搶案是內神通外鬼)

There is a growing number of Americans who believe 9/11 was an inside job. (越來越多的美國人認為 911 恐怖攻擊事件是內神通外鬼)

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