Question

helium n.氦 (1) 氦和氖为惰性气体。 Because of the effect that helium has when lightweight objects are filled with it — making party balloons and parade floats hover in the air as if by magic — it's one of the best-known elements. Helium is almost always a gas, unless it's subjected to very extreme conditions, and it's been used at various times in military airships and weather balloons. The word helium comes from a Greek root, helios, or "sun," because it was initially discovered in the sun's spectrum.

Accepted Answer

英 ['hiːliəm] 美 ['hiːliəm] (1) Helium and neon are inert gases. The element helium is a colorless, odorless gas. Because helium is lighter than air, it's commonly used for filling balloons to make them float. 1[N-UNCOUNT 不可数名词]氦 Helium is a very light gas that is colourless and has no smell.

英语单词	helium
英美音标	英 ['hiːliəm] 美 ['hiːliəm]
中文释义	n.氦
英语例句	(1) Helium and neon are inert gases.
中文例句	(1) 氦和氖为惰性气体。
vocabulary简明	The element helium is a colorless, odorless gas. Because helium is lighter than air, it's commonly used for filling balloons to make them float.
vocabulary扩展	Because of the effect that helium has when lightweight objects are filled with it — making party balloons and parade floats hover in the air as if by magic — it's one of the best-known elements. Helium is almost always a gas, unless it's subjected to very extreme conditions, and it's been used at various times in military airships and weather balloons. The word helium comes from a Greek root, helios, or "sun," because it was initially discovered in the sun's spectrum.
柯林斯解释	1 [N-UNCOUNT 不可数名词]氦 Helium is a very light gas that is colourless and has no smell.

Helium Balloons 英 Hiːliəm] 美 Hiːliəm N.氦 Neon Inert