high and low

US /haɪ ənd loʊ/
UK /haɪ ənd loʊ/
"high and low" picture
1.

到处, 高低

everywhere; in many different places

:
I've searched high and low for my lost keys.
到处找我丢失的钥匙。
They looked high and low for the missing child.
他们到处寻找失踪的孩子。