Defuser
（危险局面的）调解人
🗣️ 情景例句
Richard, isn't that too much to ask of your mother?
Richard，那是不是太麻烦你母亲啦？
Never do things by halves.
做事情不要半途而废。
Oh, I usually come by bus too.
噢，我也常乘公共汽车。