See, the firing pin is the key to the whole case!

瞧，那撞针是整个枪的关键！

youdao

One key is retained by the payee -somewhat like a private password or pin.

一个“钥匙”由收款人保留，类似于私人密码一样。

youdao

One key is retained by the payee -somewhat like a private password or pin.

一个“钥匙”由收款人保留，类似于私人密码一样。

youdao