uncouple
/ˌʌnˈkʌpl/verb
with obj.
1- disconnect (something, especially a railway vehicle that has been coupled to another)使（连接车厢）脱钩。
1.1
- no obj. become disconnected脱钩; 脱开。
1.2
- release (hunting dogs) from being fastened together in couples松开（绑成对的猎狗）。