Heliox
n. 氦氧混合气(含98%氦和2%氧,供潜水员在深水中维持呼吸用)
🗣️ 情景例句
Ten o'clock.
十点钟。
A man is not a horse because he was born in a stable.
人并不因为生在马厩里就成了马。
Good morning, class.
同学们，早上好。