| 词汇 | helium |
| 释义 | helium/ˈhi:liəm ||; ˈhilɪəm/noun [u] (symbol he) a very light colourless gas that does not burn, often used to fill objects that float in the air(balloons) 氦（一种质轻、无色的气体，常用于充气球） helium is a noble gas. 氦是一种惰性气体(noble gas)。 he·li·um /`hilɪəm; ˈhiːliəm/n [u]a gas that is lighter than air 氦 |
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