Defuser
（危险局面的）调解人
🗣️ 情景例句
Are you having a good time, Susan?
玩得高兴吗， Susan？
We have a toll-free number for customers to call.
我们对顾客提供免费服务电话。
He has made neat paths and has built a wooden bridge over a pool.
他修筑了一条条整洁的小路，并在一个池塘上架了一座小木桥。