helium
美['hiːliəm] 英['hiːliəm]
n. 氦
英英释义
Noun- a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)
例句
用作名词(n.)- Helium and neon are inert gases.氦和氖为惰性气体。
- Most big balloons are now filled with helium.现在许多大气球中充的是氦气。
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