VERBS | ADVERB | PREPOSITIONVERBS➤be, keep, remain, stay警惕;保持警覺▸➤become警覺起來ADVERB➤extremely, very極度/非常警惕▸➤especially, particularly特別警惕▸➤constantly, ever時刻警惕;一直警醒◇The organization is ever vigilant for threats to the habitats of birds.該組織對鳥類棲息地所面臨的種種威脅始終保持警惕。PREPOSITION➤about警惕⋯◇Be extra vigilant about what you eat or drink.要格外當心飲食。➤against對⋯警惕◇You need to be vigilant against garden pests.你要警惕花園裏的害蟲。
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