英语词汇“optional”的读音、翻译、释义、用法及例句-智慧网

词汇	optional
释义	optionaloptionalD.J.:[ˈɔpʃənl]K.K.:[ˈɑpʃənəl]adj.1.■可选择的, 非强制的The goods are optional, but only one.这些物品是可以任选的, 但只能选一个。
随便看	soil vent soil vertical distribution soil vertical pattern soil vertical zonality soil viscosity soil wash soil washing soil water soil water balance soil-water belt soil water belt soil water characteristic curve soil water constant soil water content soil water depletion soil-water diffusivity soil water diffusivity soil water evaporation soil water flow soil water form soil-water heat pump soil water hysteresis soil water infiltration soil water in liquid phase soil water in solid phase

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