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
then you've got to smile first.
你就得先笑一笑。
We are supposed to help each other.
我们理应彼此帮助。
The only passengers, a young woman and her two baby daughters, were unhurt.
机上仅有的乘客，一位年轻的妇女和她的两个女婴却平安无事。