英语词汇“helium”的读音、翻译、释义、用法及例句-纳罕网

词汇	helium
释义	helium /ˈhiːliəm//ˈhiːliəm/ ★★★n. n ① 【化】氦(稀有气体元素;符号He) 同义词 He atomic number 2 词路径 entity physical entity matter substance chemical element element helium He atomic number 2 上位词 argonon chemical element element inert gas noble gas
随便看	be on the right tack be on the rise be on the rolls be on the safe side be on the scene be on the streets be on the team be on the tiles be on the warpath be on the wrong tack be on to be on to a good thing be on velvet be on visiting terms with ... be open to be opposed to be opposite to be ordered to be out be out and about be out for ... be out for a person's scalp be out in one's reckoning be out of be out of collar

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