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
The plane's been delayed 10 minutes.
飞机晚点了十分钟。
Prepare for a rain day.
未雨绸缪。
There are many stars in the sky.
天上有很多星星。