The flow of water (as in a pipe, watercourse, etc.) or the passage of water through a membrane; the amount or rate of this.
Early 19th century; earliest use found in John Mason Good (1764–1827), physician and surgeon.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。