英语词汇upstream of catalyst怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	upstream of catalyst
释义	upstream n — 下游 n • 上游部门 n upstream — 逆水 • 逆流 adv • 逆流而上 adj • 向上游 adv • 向上游 adj catalyst n — 催化 n • 催化剂 n • 诱因 n of — 的 catalyst — 触媒
随便看	action of negligence action of others action of paying action of the Board action of the Board action of the law action on addressing action on aging action on a matter Action on children in the criminal justice system action on climate= action on development action on environmental issues action on hold action on matter action on mitigation action on social determinants action on stage action on the ground action on this action on two fronts action on violation action on your behalf action on your part action on youth

英汉双解词典包含2273206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。

upstream n —