be upon one's guard

be upon one's guard

• 警惕，提防；警戒

• ill-considered
• barbary sheep
• cadmium sulfide
• grasswards
• paleoanthropic
• elegy
• silage cutter
• supervisory control
• wheel out
• ad majorem Dei gloriam
• flliums
• put (或set) the cart before the horse
• Chlamydoselachidae
• unilocular
• sleeps
• cartographies
• reforestation
• British Rail
• mesolites
• Harlem
• dishono(u)rably
• Overijssel
• Rayleigh-Ritz method
• pigeon
• secondary low
• make-game
• concerted reaction
• all quarters of the Earth / globe
• press manmen
• electrodialyzer
• I need hardly say / tell / remind etc
• Enovid
• force the pace
• TGG
• get up and dust
• Wilno
• Chattahoochee
• foretop
• rewaking
• Sorocaba
• duplicate whist
• central terminal
• anticoagulant
• tow sack
• turnouts
• stock farming
• cry for
• put toward
• reinflamed
• step out of line
• take an attitude of
• scissored
• Hapi
• hexabiose
• interment
• broken home
• hotdoggings
• velodromes
• fecund
• colloid
• look blue
• Noetherian ring
• Luminal
• verticillastrate
• hard-shell clam
• phenomenologists
• squishy
• expunging
• life expectancy
• guadeloupes
• Amphissitidae
• caught
• fish up (out of/from)
• iron-grey
• multigroup model
• Bohr, Niels
• wood pewee
• wheel conveyor
• PhM
• prodigalize
• best ev
• the silver screen
• biwa
• Stevens, John Paul
• Breugel family
• bring sth to a standstill
• zoogeographers
• perkingly
• marginal thrust
• sustentive
• nationaliser
• fit in with
• chromides
• fifer
• inculpates
• nonbook materials
• draw water with a sieve
• peregrine falcons
• land of milk and honey
• apparitional