氦 (hài) — helium
定義
noun
helium
例文
- 氦，。Zhè ge qì qiú lǐ miàn shì hài, suǒ yǐ tā néng fēi qǐ lái.This balloon is filled with helium, so it can fly.
- 氦。Tā men zài shí yàn shì lǐ yòng hài zuò shí yàn.They use helium to do experiments in the lab.
- 氦，。Kōng qì bǐ hài zhòng, suǒ yǐ qì qiú huì shàng shēng.Air is heavier than helium, so balloons rise.
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