petard

例句：

1. 1.He fell into a petard when he tried to escape from the police.
   当他试图从警察手中逃脱时，他掉进了一个陷阱。
2. 2. The game was a trap for the players.
   这个游戏是针对玩家的陷阱。
3. 3. The thief was caught in a petard by the police.
   这个小偷被警方抓住了一个陷阱。