emergency coupler

例句：

1. 1. The emergency coupler was used to connect the two pieces of equipment together.
   紧急连接器被用来将两个设备连接在一起。
2. 2.The engineer quickly replaced the damaged part with an emergency coupler.
   工程师迅速用一个紧急连接器替换了损坏的部分。
3. 3.In emergencies, it is important to have a spare emergency coupler on hand.
   在紧急情况下，手头备有一个备用的紧急连接器是很重要的。