Passive diffusion
[化] 被动扩散
🧩 词语组成解析
🗣️ 情景例句
You probably heard about it. We have private teachers in our holiday.
或许你已经听说过。我们交大的学生在假期间做家教。
Beauty is but skin deep.
美丽只是皮相（指：不能以貌取人）。
Yes, I do. But I walk sometimes.
是的，我通常骑车。但有时我也步行。