dog days of summer
夏天，常常炎热，湿热，闷热，和无聊的日子
口语·形容闷热夏日
英文释义
hot and humid days during the summer season
例句
We stay indoors with AC during the dog days of summer.
典故来源
与“dog days”同源，强调夏季最闷热难熬的时段，常带无聊感。