on all fours before是什么意思？

• lake
• autumn
• 权限英文
• searches
• amazing
• conflict
• general
• narrow
• 导师英文
• 确认英文
• polite
• prompt
• vehicle
• text
• cheese
• giraffe
• general
• 缺陷英文
• committing
• scared
• profile
• 解决方案英文
• disappointed
• brat
• begins
• reveal
• 参与者英文
• supper
• 分配英文
• passage

• 抛弃英文
• maths
• firmness
• repeat
• 领域英语
• volume
• erased
• 实施英文
• default
• intermission
• 呼吁英语
• droplets
• failure
• 局外人英文
• bombarded
• lesson
• saturday
• rice
• lycopene
• toxicity
• 流浪者英文
• 队长的英文
• BARRIE
• satisfaction
• fiercely
• juice
• candy
• explore
• predict
• neck

• spumescence
• sicker
• sickest
• seed plot
• matted bed
• nursery bed
• shyer
• shyest
• set seed
• seed setting
• produce seeds
• prioress
• buck for
• try for
• be in question of
• Slightly grey
• sparing no effort
• straighter
• straightest
• kathodal
• vasa efferentia
• efferent duct
• Output function