be on the alert against是什么意思？

• begins
• passage
• toxicity
• vehicle
• autumn
• 领域英语
• narrow
• 长颈鹿英语怎么说
• 呼吁英语
• droplets
• fiercely
• giraffe
• searches
• reveal
• lake
• 抛弃英文
• amazing
• giraffe
• 旋律的英文
• 参数英文
• various
• lesson
• silver
• 方案英语
• 权限英文
• tourist
• explore
• committing
• cheese
• chess翻译

• default
• lycopene
• ticket
• failure
• 造型的英文
• polite
• juice
• 解决方案英文
• conflict
• firmness
• organizations
• mind
• disappointed
• 来源英语
• general
• approaches
• supper
• scared
• crayon
• saturday
• theatre
• PAXLOVID怎么读
• predict
• passage
• cloud
• intermission
• monitor
• brat
• fake
• client

• eat breakfast
• eat dinner
• go hiking
• have English class
• play the piano
• visit grandparents
• fly kites
• make a snowman
• plant trees
• answer the phone
• clean the room
• cook dinner
• draw pictures
• listen to music
• read a book
• see you later
• write a letter
• drink water
• catch butterflies