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
Goodbye, thank you very much for coming.
再见，感谢您能光临。
Please do not move.
请不要动。
Yes, we only have one more item to take care of.
是啊，要谈的只剩下一项而已了。