Level 3 · word 2,840 of 20,000
alert
/əˈlɜːrt/
American
- adj. 警觉的, 机警的
- n. 警报
- Definition
- adj. paying close attention and ready to react quickly
- n. a warning of possible danger
- Example
- The guard stayed alert during his entire night shift.
- 警卫在整个夜班期间都保持警惕。