the joker in the pack

the joker in the pack something or someone whose effect on future events cannot be known难以预料的事; 难以捉摸的人the ˌjoker in the ˈpacka person or thing who could change the way that things will happen in a way that cannot be predicted能以意想不到的方式改变形势的人（或事）

• deputy lieutenant
• beat about (for)
• from under one’s nose
• intervolved
• passenger car
• duricrust
• constant species
• milesians
• system capacity
• fault-tolerant computer
• u.p.
• gae
• on duty
• All the King's Men
• pcrs
• Yucatecs
• electiveness
• catholicizing
• fussing
• hop in
• responsories
• in honour bound
• rattlebrain
• dolmens
• orbitals
• arctic pack
• metazoic
• consortia
• bipolar amplifier
• home farms
• be annoyed with someone about something
• hypotonics
• qi
• big wienie
• granivorous
• nuclear power
• whalebacks
• slip（或 fall）through the cracks
• downgraders
• bruise along
• commentates
• phytomera
• diagrammatics
• Naxos
• plainness
• Samaritanism
• draughtboards
• delafossite
• speech act
• heavier-than-air craft
• lightning strikes
• epimerize
• dopa
• cut and carve
• distraughted
• Chancellor of the Exchequer
• the hell
• septuples
• DCMG
• book fair
• Coronado, Francisco Vasquez de
• Popular Latin
• I would be glad if
• D phase
• Bether
• fractional liner transformation
• cut a swathe through sth
• apply within
• Anacreontic
• voice wrap
• real jam
• self-reading
• rightsized
• papovaviruss
• HIPS
• on principle
• tarbooshes
• the Reaper
• echoic word
• sabkha
• set chisel
• Baucis
• spongins
• solid insulator
• Seistan and Baluchistan
• halfheartedly
• damage suit
• linocut
• corn cake
• undertakes
• cupflower
• speaking trumpet
• m-toluic acid
• great-grandfathers
• Plain People
• cascabel
• in cahoot with
• benadryls
• mumchance
• inexecutable