a hard nut to crack是什么意思？

• intermission
• pear
• aspect
• 领域英语
• permitted
• brat
• scared
• 导师英文
• tomato
• disappointed
• fiercely
• theatre
• giraffe
• monitor
• cloud
• 方案英语
• peeping
• conflict
• emergency
• 分配英文
• 抛弃英文
• PAXLOVID怎么读
• sweater
• panicked
• candy
• erased
• organizations
• autumn
• profile
• 来源英语

• cheese
• 局外人英文
• dragon
• fake
• ticket
• reveal
• 流浪者英文
• searches
• droplets
• general
• front
• amazing
• text
• modernize
• rice
• toxicity
• tourist
• 纪念品英语
• ultra
• banger
• passage
• searches
• general
• lesson
• lycopene
• polite
• juice
• bombarded
• BARRIE
• 造型的英文

• governing class
• grass plains
• graze on
• grind up
• grizzly bear
• grocery store
• gypsy moth
• half brother
• halfway path
• handsome salary
• harden into
• have a good idea of
• have but one
• have effect on
• have less to do with
• have more to do
• have in common
• heartbreak over
• high kick
• high performer
• high plains
• higher education
• hillbilly music