As I got closer, I realized that the metal cage was in fact a small trap.

当我走得近一点，我发现那个金属笼子其实是一个小陷阱。

youdao

He raised his hands in surrender and stood aside so the barefoot old man in stained overalls could retrieve his kill from the metal jaws of the small trap.

他举手以示放弃并站在一旁，让那位穿着脏兮兮的工作裤的光脚老头，可以从那个小小的诱捕夹子的金属钳夹上取得其猎物。

youdao

As I got closer, I realized that the metal cage was in fact a small trap.

走近时我发现金属笼子其实是一个小陷阱。

youdao

At each end of the car was a tiny metal room with a toilet that flushed waste through a trap door.

WSJ: Riding the Trans-Mongolian Railway through Russia, China and Mongolia

Dr Bermel's proposed trap is a thin sheet of tungsten (a heat-resistant metal) that has been processed in quite a complicated way.

ECONOMIST: Solar power