成语讲解：Let one's hair down

从字面上来看,let one's hair down 是把头发放下来

你一定会想,我的头发并不长,也没有束起来,为什么要把头发放下来呢?看来这个成语最初是从那些把头发梳成髻,打扮的漂漂亮亮的的贵妇人那儿来的。她们终日出入高级的社交场所,当然要打扮的规规矩矩的.因而她们的约束也很多。只有当社交活动结束之后,她们才能放松一下。不受约束的想干什么就做什么。因而let one's hair down 就是放松,不受约束的意思。

Tired of the way of life in the court, the princess decided to let her hair down and go to the country for a few days. 对宫中生活方式感到厌倦,公主决定到乡间去住几天,放松一下。

The long day being over, the girls let their hair down and sang together. 漫长的一天过去了.女孩们一齐歌唱,松弛一下。

very good.