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
I did.
是的。
Who put you in charge?
谁说让你做主了啊？
modern states 'invest'in institutions of learning to get back 'interest'
现代国家对教育机构投资，收回的"利息