英语词汇ballast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	ballast
释义	bal·lastBrE /ˈbæləst/NAmE /ˈbæləst/ noun [U] heavy material placed in a ship or hot-air balloon to make it heavier and keep it steady （船中保持平衡的）压舱物；（热气球的）镇重物a layer of stones that makes a strong base on which a road, railway/railroad, etc. can be built （用作公路或铁路路基的）道砟
随便看	tulles Tulsa Tulsan tulsans tulsas tum tumble tumbled tumbledown tumble-drier tumble dryer tumbler tumblerful tumblerfuls tumblers tumbles tumble to tumble to sb tumble to sth tumble to sth/sb tumbleweed tumbleweeds tumbling tumbril tumbrils

英汉双解词典包含314281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。