know which end is up

短语

发音

AU

词形变化

knew which end is up knowing which end is up known which end is up knows which end is up 三单 knows which end is up knowing which end is up 现在分词 knew which end is up 过去式 known which end is up 过去式 known which end is up 过去分词

别名

know which way is up

释义与例句

v.
  1. 1.

    To possess sound judgment or common sense; to have a clear understanding of a situation.

    习语

    He was too stoned to know which end was up.

词源

From the common marking this end up on parcels to guide proper transport.

来源：wiktionary