Activity-based
基于活动
🧩 词语组成解析
v. 立基于, 以…为基础（base的过去式和过去分词）
🗣️ 情景例句
and I can give you and Mrs. Stewart a month of classes free.
我让你和你太太免费上一个月的课。
The world is a ladder for some to go up and others to go down.
世界好似一把梯，有人上去有人下。
What are you doing?
你在干什么？