keep down是什么意思？

• explore
• erased
• 抛弃英文
• droplets
• 领域英语
• client
• panicked
• maths
• saturday
• PEGGING
• dragon
• cloud
• aspect
• 来源英语
• prompt
• fake
• algiers
• narrow
• theatre
• intermission
• 确认英文
• supper
• polite
• juice
• chess翻译
• general
• lesson
• organizations
• 旋律的英文
• banger

• fiercely
• crayon
• default
• satisfaction
• rice
• text
• repeat
• modernize
• 局外人英文
• 分配英文
• emergency
• predict
• pear
• approaches
• ticket
• begins
• permitted
• 导师英文
• various
• conflict
• 缺陷英文
• 方案英语
• bothering
• tourist
• peeping
• profile
• front
• 呼吁英语
• neck
• 造型的英文

• dihydrocalciferol
• dihydrochalcone
• dihydrocholesterin
• dihydrocholesterol
• dihydrocodeinone
• dihydrocodeinoney
• dihydrocoenzyme
• dihydrocollidine
• dihydrocorynantheine
• dihydrocostunolide
• dihydrocoumalin
• dihydrocoumarin
• dihydrodaunomycin
• dihydrodesoxycodeine
• dihydroequilenin
• dihydroergotamine
• dihydroergotoxine
• dihydroerythroidine
• dihydrogalanthamine
• dihydrogingerol
• dihydrol
• dihydromorphine
• dihydromorphinone
• dihydroneopterin
• dihydroorotase
• dihydroprogesterone
• dihydropyrane