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Open the tool →不知高低 (bù zhī gāo dī) is a Chinese idiom (chengyu) meaning “to speak or act without knowing the proper limits or consequences”.
不知高低 is pronounced bù zhī gāo dī in Mandarin Chinese.
Literally, 不知高低 means “don't know high or low”. It is used to mean “to speak or act without knowing the proper limits or consequences”.
指说话或做事不知深浅轻重。