hose collar

例句：

1. 1.The plumber used a hose connector tofix the leaky pipe.
   水管工使用一个水带扣来修理漏水的管道。
2. 2.The firefighter wore a watertight collar to protect himself from the heat.
   消防员穿着水密扣来保护自己免受高温的伤害。
3. 3. The engineer tested the new designof the hose connector for its watertight performance.
   工程师测试了新设计的水带扣的水密性能。