Level 4 · word 5,204 of 20,000
harden
/ˈhɑːrdən/
American
- v. 变硬, 使坚强, 变冷酷
- Definition
- v. to become or make something solid, tough, or less sympathetic
- Example
- Leave the clay outside so it can harden overnight.
- 把粘土放在外面，让它过夜变硬。