be on one’s guard

be on one’s guard警戒;提防：The watch of our warehouse is always on his guard because he knows that his responsibility is very grave.我们仓库的看守人总是特别警觉，因为他知道他的责任非常重大。

• body and soul
• hindered setting
• fear for
• IVCs
• designer drug
• monostable multivibrator
• aspergillum
• multilayers
• round on (或upon)
• transactivations
• plesiotype
• lepras
• keep open house
• as meek as a lamb
• bronzes
• dead hours of the night
• WSB
• river valley
• hidden curriculum
• unkindness
• glacial abrasion
• on the (或a) dead run
• greaseproof
• strived
• thundersqualls
• accuracy of fire
• Bucerotidae
• coreferences
• Early Precambrian Era
• assembly shop
• subtropicss
• at blows
• radiant point
• hypogamy
• stroma
• tng
• yellow ribbonism
• Archimedes' screw
• ripping bars
• Brown,Tom
• mode transducer
• numerating
• benignants
• scirrhosity
• insist on/upon
• type section
• supersymmetries
• heliogram
• rabbinate
• situations
• bushes
• condensates
• control boards
• encrustations
• Londonish
• alloplasty
• stegosauruss
• cabinet saw
• twilight shift
• Gibraltar
• river wheat
• pant-
• mineralogical
• incrassatives
• sticking coefficient
• printableness
• exhaustion point
• circumcircle
• excerpt
• Brailler
• guls
• Beebe, William
• AMPD
• Telvar
• ance
• have it out with
• plasmacytes
• table-leaves
• doming
• Juris Doctors
• Bund
• Verknneudinsk
• be on an equality with
• ride the black donkey
• bioflick
• Ludwig
• mulatto
• deerhorns
• formulising
• celestial longitudes
• phonomania
• multipolarities
• psoas major
• vented
• orthotist
• sinuately
• coterminously
• objective correlative
• pay one's way
• fogginesses