be as firm as a rock是什么意思？

• narrow
• monitor
• bombarded
• general
• 局外人英文
• explore
• fiercely
• profile
• searches
• failure
• giraffe
• tourist
• satisfaction
• permitted
• general
• amazing
• various
• algiers
• 纪念品英语
• firmness
• vehicle
• erased
• front
• lycopene
• cloud
• prompt
• 方案英语
• BARRIE
• lake
• chess翻译

• bothering
• lesson
• modernize
• 确认英文
• ultra
• 参与者英文
• scared
• searches
• tomato
• repeat
• 缺陷英文
• 参数英文
• organizations
• disappointed
• passage
• maths
• polite
• giraffe
• fake
• reveal
• rice
• approaches
• 权限英文
• begins
• 分配英文
• PEGGING
• 造型的英文
• crayon
• 队长的英文
• autumn

• bacillemia
• bacilli
• bacillicide
• bacilliculture
• bacilliform
• bacillin
• bacillisin
• bacillomycin
• bacilloscopy
• bacillosis
• bacilluria
• bacillus
• bacilus
• bacilysin
• bacimethrin
• baciphelacin
• bacitracin
• back
• backache
• backacter
• backactor
• backbar
• backbeach
• backbencher
• backbit
• backbite
• backbiter
• backbiting
• backbitten
• backblowing