caltrap

例句：

1. 1.The hunter set a caltrap to catch the deer.
   猎人设置了陷阱来捕捉鹿。
2. 2.The thief was caught in a caltrap by the police.
   小偷被警察设下的陷阱抓获。
3. 3. The farmer used a caltrap to catch the escaped pigs.
   农民使用陷阱抓住了逃跑的猪。