To give control or power to someone else, thereby putting oneself at a disadvantage or even at risk of harm; to hand over the means of one's own destruction.
他把公司最重要的客户资料交给了竞争对手的代表，简直是倒持泰阿，自掘坟墓。
He handed over the company's most important client data to a representative of a competitor; it was truly like holding the Tai'a sword upside down, digging his own grave.
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