英语词汇concentration of dangerous substances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	concentration of dangerous substances
释义	concentration n — 集中 n • 浓度 n • 含量 n • 浓度 n concentration — 浓缩 • 凝缩 substances pl — 物质 n of — 的 substance — 内容 • 实体 • 物体
随便看	freeload for food freeloading free loan agreement free local calls free location free lodging free lossless audio codec free lottery ticket free love free luggage free lunch freely freely access freely accessible freely accessible to the public freely adapted freely adjustable freely adjusted freely and effortlessly freely and fairly freely and fully freely and independently freely and readily freely arrived at freely as possible

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。

concentration n —