Vacillatory
a. vacillate的变形
✅ 同义词
🗣️ 情景例句
If moving to L.A. is in Harry's best interest,
假如搬到L.A.对Harry最有利的话，
When did you buy the car?
你什么时候买的车？
The children were leaving school on Tuesday when they saw a truck.
星期二，孩子们正放学回家，这时，他们看见一辆卡车。