英语词汇optional facility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	optional facility
释义	optional facility proportionalityn. 比例(性)；均衡(性)；相称 constitutionalityn. 合宪性 conventionalityn. 照惯例;习俗;因循性;恪守常规 operationalizevt. 使用于操作,使开始运转,实施
随便看	stock minded stock mixing stock mold stock moment Stock mosaic virus stock mould stock movement analysis report stock name Stock needle holder stock note Stock number stock nursery stock obsolescence costs stock of bills of exchange stock of capital goods stock offer stock of knowledge stock of manpower stock of maps stock of material stock of money Stock of rat stock of real capital stock of record stock of service wagons

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。