hydrogen
US
UK hydrogen n: uncountable (colourless gas)
SC 氢气 qīng qì
TC 氫氣
TC 氫氣
Hydrogen is one of the components of water.
H-bomb n: informal, abbreviation (hydrogen bomb)
SC 氢弹 qīng dàn
TC 氫彈
TC 氫彈
H-bombs cause a great deal of damage.
hydrogen bomb n: (thermonuclear explosive device)
SC 氢弹 qīng dàn
TC 氫彈
TC 氫彈
The country tested a hydrogen bomb recently.
hydrogen peroxide n: (chemical: bleach)
SC 双氧水 shuāng yǎng shuǐ
TC 雙氧水
TC 雙氧水
SC 过氧化氢 shuāng yǎng shuǐ，guò yǎng huà qīng
Hydrogen peroxide may damage your hair.
I usually use hydrogen peroxide to bleach my hair.