🧩 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
Four o'clock at the advanced exercise class. With me.
四点钟去高级健身课， 跟我一起。
It's too dark.
太黑暗了。
Be careful not to fall ill.
注意不要生病了。