[U]氢 colorless and smell-less gas which burns very easily
英英释义
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
hydrogen的用法和样例:
例句
用作名词 (n.)
Hydrogen is highly explosive. 氢极易爆炸。
Hydrogen and oxygen are gases. 氢和氧是气体。
A molecule of water consists of two atoms of hydrogen and one atom of oxygen. 水分子含有两个氢原子和一个氧原子。