| 释义 |
氦 Hài ★☆☆☆☆n.名词⁰·⁰⁰¹¹ᴾᵃ⁹³⁹¹
基本例句
helium
空气一种无色、无嗅、无味的气体混合物，主要由氮气约占78％和氧气约占21％组成，还有少量的氩、二氧化碳、氢、氖、氦及其它气体A colorless, odorless, tasteless, gaseous mixture, mainly nitrogen and oxygen with lesser amounts of argon, carbon dioxide, hydrogen, neon, helium, and other gases. |