Level 5 · word 7,964 of 20,000
rust
/ˈrʌst/
American

- n. 锈, 铁锈
- v. 生锈
- Definition
- n. the reddish-brown substance that forms on metal
- v. to become covered with rust
- Example
- Old bicycles left outside quickly start to rust.
- 放在外面的旧自行车很快就会生锈。