Vacillatory
a. vacillate的变形
✅ 同义词
🗣️ 情景例句
Why?
怎样？
The old lady takes delight in visits from her grandchildren.
那个老妇人以孙辈门看她来为乐。
they aroused great interest at the time, they had important theoretical consequences,
这些观察在当时引起了人们极大的兴趣，具有重要的理论意义，