英语词汇“optional”的读音、翻译、释义、用法及例句-英语在线翻译词典-残梦网

词汇	optional
释义	optionalop•tion•al /'ɒpʃ(ə)n(ə)l/ adj 随意的，可选择的，非强制的 • an optional course 选修课
随便看	water resistant water ski water skiing water softener water sports water supply water table water tower water vapour water vole water-soluble waterbed waterborne watercolour watercourse watercress watered-down waterfall waterfowl waterfront waterhole watering can watering hole watering place waterless 酒饵酒馀茶后酒馆酒馔酒驾酒骨酒鬼酒魁酒魄酒魔水煮肉片(私房菜) 改良版蚂蚁上树水煮肉片口水鸡凉拌黄豆芽番茄炒鸡蛋排骨伪麻婆豆腐脆皮鱼香茄子糖醋里脊酸菜鱼

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