上有天堂，下有苏杭 "Up in heaven; there is paradise; down on earth; there are Suzhou and Hangzhou." ; “Up in heaven; there is paradise; down on earth; there are Suzhou and Hangzhou.”

床下有人 Who Under The Bed ; What's Under the Bed

下有界的 [数] bounded below ; bounded from below

比上不足比下有余 worse off than some better off than many ; can pass muster ; to fall short of the best, but be better than the worst

天下有情人 people In Love ; All lovers

下有界序列 bounded below sequence

下有界有序集 ordered set bounded below

井下有害空气 irrespirable atmosphere

根下有兀儿德之泉 well of urd

井下有很多落物 There is a lot of junk in the hole