英语词汇“helium balloon”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 balloon
释义	Word Frequency helium balloon (ˈhiːlɪəm bəˈluːn) noun a balloon that is filled with helium and rises up into the air if not held
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