词汇与表达：relent-relentless

relent

记忆技巧：re 一再 + lent 松 → 一再松开 → 放松

If you relent, you allow someone to do something that you had previously refused to allow them to do.
If bad weather relents, it improves.
If the weather relents, the game will be finished today.
如果天气转好的话，比赛将在今天结束。


relentless adj. 无情的
relent 放松；变宽厚 + less 无…的 → 不宽厚 → 无情的