释义 |
atomic number 1 基本英英 英Noun:a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas;the simplest and lightest and most abundant element in the universe
Noun: a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe |