英语词汇hard at work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

英汉双解词典包含3607232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。

单词	hard at work
释义	hard at work
随便看	expansion plug expansion plug snap ring expansion pool Expansion port expansion post expansion power expansion pressure expansion pressure device expansion pressure measurement expansion pressure ratio expansion pressure test expansion procedure expansion process expansion program expansion programme expansion project expansion projects expansion prosthesis expansion pyrometer expansion rail joint expansion rail joint,rail expansion device, switch expansion joint Expansion Rate expansion rate of foam Expansion ratio expansion ratio of nozzle