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单词
helium
释义
helium
1 ENTRIES FOUND:
helium
(noun)
helium
/
ˈ
hiːlijəm/
noun
helium
/
ˈ
hiːlijəm/
noun
Learner's definition of HELIUM
[
noncount
]
:
a chemical element that is a colorless gas, that is lighter than air, and that is often used to fill balloons
氦;氦气
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更新时间:2026/9/17 5:43:28