英语词汇optional extra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 extra
释义	optional extra noun a non-essential additional item which is available for purchase （可买可不买的）附件, 额外配件。
随便看	Germanizer German measles Germano- German shepherd German silver German South West Africa Germany germ cell germicidal germicide germinal Germinal germinally germinate germination germinative germinator Germiston germ layer germ line germ plasm germ warfare germy Geronimo gerontic

英汉双解词典包含131075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。