Clarifications
n. 澄清, 说明；净化
🗣️ 情景例句
Please do the work at your own convenience.
请在方便时把这事做一做。
The word once spoken can never be realled.
一言既出，驷马难追。
When did you last go to the seaside?
你上一次是什么时候去海滨的？