Preengaging
vt. 预约, 先约
🗣️ 情景例句
I have to sign copies of my book for a lot of people
我还必须为许多人在我的书上签名
Prove thy friend ere thou have need.
在你需要朋友帮助前，先要考验他们。
Wherever there is smoke, there is fire.
无风不起浪。