| 单词 | helium |
|---|---|
| 音标 | 英[ˈhi:liəm] 美[ˈhiliəm] |
| 解释 | n.<化>氦; |
| 例句 | N-UNCOUNT 氦 Helium is a very light gas that is colourless and has no smell. |
| 变形 |
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