vig·i·lant
adjective/ˈvɪdʒɪlənt/
/ˈvɪdʒɪlənt/
(formal)- very careful to notice any signs of danger or trouble
警觉的；警惕的；警戒的；谨慎 - A pilot must remain vigilant at all times.
飞行员必须随时保持警惕。 - The thief was spotted by vigilant neighbours.
小偷被警惕的邻居发现了。 - The organization is ever vigilant for threats to the habitats of birds.
该组织对鸟类栖息地所面临的种种威胁始终保持警惕。 - You need to be vigilant against garden pests.
你要警惕花园里的害虫。
Oxford Collocations Dictionaryverbs- be
- keep
- remain
- …
- extremely
- very
- especially
- …
- about
- against
Word Originlate 15th cent.: from Latin vigilant- ‘keeping awake’, from the verb vigilare, from vigil ‘awake’. - A pilot must remain vigilant at all times.