英语词汇“helium”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	helium
释义	helium noun uncountable chemistry UK /ˈhiːliəm/ DEFINITIONS1 1 a chemical element which is a gas that is lighter than air. Its symbol is He and it is often used for lifting large balloons. Synonyms and related words Gases acetylene ammonia argon Synonyms and related words Chemical elements actinium alkali metal aluminium helium noun uncountable chemistry US /ˈhiliəm/ DEFINITIONS1 1 a chemical element which is a gas that is lighter than air. Its symbol is He and it is often used for lifting large balloons. Synonyms and related words Gases acetylene ammonia argon Synonyms and related words Chemical elements actinium alkali metal aluminum
随便看	run-on sentence run out run out of gas run out of gas/steam run out of road run out of/lose steam run out on run out/sell out run over run rings round someone run riot run short (of something) run someone close run someone off the road run someone ragged run someone/something to earth run someone/something to ground run someone’s life runt run the clock down run the gauntlet run the risk (of something) run through run-through run to

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