Vacillatory
a. vacillate的变形
✅ 同义词
🗣️ 情景例句
I'm taking 19 credit hours.
我修了十九个学分。
In the United States ,there are many factories for making cloth.
在美国，有许多造布的工厂 。
He found my lecture interesting.
他觉得我讲课有趣。