Ballon d'essai
n. <法>问路石子,试探气球,测风气球
🧩 词语组成解析
[经] 广告用气球
🗣️ 情景例句
But Dad was so exhausted when he came home from work.
但爸爸工作回来时已经累得不得了了。
Not your business.
要你管！
Sorry, I don't know.
对不起，我不知道。