Level 4 · word 4,118 of 20,000
hydrogen
/ˈhaɪdrədʒən/
American
- n. 氢
- Definition
- n. a light, colorless gas that is the simplest chemical element
- Example
- Hydrogen is the lightest gas in the whole universe.
- 氢是整个宇宙中最轻的气体。
Word mapChemical elements