Referrer
推荐人; 介绍人; 提到某人（或某事）的人
🗣️ 情景例句
We communicate with each other by letter.
我们用书信彼此联系。
I don't like wearing the uniform.
我不喜欢穿制服。
The police had been told that a bomb had been planted on the plane.
有人报告警察，说飞机上安放了一枚炸弹。