stumble on / across / upon sth

stumble on / across / upon sth to find or discover something by chance and unexpectedly偶然发现（碰见）;SYNcome across•Researchers have stumbled across a drug that may help patients with Parkinson's disease.研究人员偶然发现了一种药物，也许可以治疗帕金森病。

• extoller
• broach someone's claret
• prefocused或cussed
• tax bite
• UB
• dig for
• tetrachloromethanes
• jet washer
• inhalations
• never say never
• belleter
• wet flashover voltage
• crossbar switching system
• tag boat
• prepossessions
• papa
• anodise
• by the medium
• limit of a function
• weejuns
• long robe
• Priestley, Joseph
• historicities
• pronaos
• equational verb
• ampere-meter
• flapeared
• Texas armadillo
• orthoepical
• student's t-tests
• logic-chopping
• Bradbury, Ray Douglas
• house snake
• Arianiser
• hernshaws
• tonsil
• dolley
• stillhouses
• ma'allem
• jejunotomy
• hydratase
• tandooris
• sayonara
• -ility
• dynamicist
• violate
• staple guns
• relativistic
• radical rightism
• Sutlej
• resupination
• merinoes
• hill creep
• can't be bothered （to do something）
• baptismal names
• Cyathus
• servitress
• myg
• downtown
• philolog ic
• betise
• methyl behenate
• curatic
• phone-ins
• screen modulation
• vitriolled
• take the bread out of sb's mouth
• khuds
• homologiser
• in one swoop
• external gills
• lead vanadate
• committeeperson
• Calvinists
• Scottie
• Sandhurst
• cencerros
• meeting place
• futilitarianism
• be all of a tremble
• fondles
• ion etching
• in that
• FUK
• peachicks
• steenkirk
• celebrities
• exponential pulse
• petrographic microscope
• blower brush
• take the waters
• superabundants
• gouge sb's eyes out
• emaciated
• grounds
• ropak
• keep company
• high schools
• gnawed
• roselands