Demonstration expense
[经] 示范费, 展出费
🧩 词语组成解析
🗣️ 情景例句
May I ask who's calling?
请问你是谁？
The history paper was really easy, so was the biology one.
历史试题确实容易，生物试题也很容易。
You need to workout.
你需要去运动锻炼一下。