英语词汇usefulness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	usefulness
释义	use.ful.ness 5jU:7sf[l7nEs n [U] 有用，有助益，有效 The usefulness of lavender essence for treating burns is well known. 熏衣草香精治疗烧伤的作用人人知道。 Some people think this system of education has outlived its usefulness (= is no longer useful). 一些人认为这一教育制度已经不在有效用了。
随便看	ionospheric iota IOU IPA ipso facto IQ ir- IRA irascibility irascible irascibly irate ire iridescence iridescent iridium iris iris Irish American Irish coffee Irish stew irk irksome iron iron

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