Molecular collision
[化] 分子碰撞
🧩 词语组成解析
🗣️ 情景例句
It is OK to ask children how old they are.
问小孩多大了是可以的。
If two men ride on a horse, one must ride behind.
两人同骑一马，必有一人在后。
Don't trust to chance!
不要碰运气。