如何使用 "petard" 造句

1. In 2007 two inept terrorists were hoist on their own petard when their bomb-laden jeep got wedged in the doorway of glasgow airport and caught fire .
比如2007年,当装有炸弹的吉普车在glasgow机场的门道里卡住并起火时,两个笨拙的恐怖分子成为自己炸弹的牺牲品。
2. Your tenure and cost to the organization ( 30 % ) : how much money could the company save if it hoisted you by your expensive petard ?
员工任期及公司在此期间花在你身上的成本(30%):如果公司以聘用你的成本过高为理由炒你的鱿鱼,公司能够节省多少开支?