at need

at need archaic when needed; in an emergency 〈古〉困难之时; 必要时： men whose experience could be called upon at need. 在必要时有经验的可用之人。 at need在紧急时;在需要时：Please notify us whenever you are at need，we will come and help you at once.在你需要时请通知我们，我们将立刻来帮助你。

• be in the firing line / in the line of fire
• high priority
• TAPI
• forward wave
• lamping
• Buddhisms
• brachiates
• Russianisation
• commorancies
• radical signs
• caases
• dawgs
• pulvinate
• thermospheres
• cadet teacher
• Senecas
• myxomycete
• Grawitz's tumors
• anisic
• CAVU
• laminable
• terra firmas
• deep-rootedness
• speckle interferogram
• viruss
• hernial
• heddles
• Saite
• intergrades
• non liquet
• step-downs
• track meet
• expiate
• ethnohistoric
• eufunction
• veinite
• grid planning
• constructionism
• alternating group-flashing light
• interposed
• dielectric-rod antenna
• contact process
• waleed
• fight to a the last ditch
• abrasive jet cleaning
• green belts
• dosed
• I must say
• be of assistance to
• outstrides
• tropical air
• Webmaster
• pat someone on the back
• a/one helluva…
• outpension
• harnessers
• judicator
• N-methyl-P-aminophenol
• re-election
• on a trip
• chemical burns
• multiplicity of infection
• by （或of） the name of
• electrostatic copier
• hornbill
• fight someone's battles for him
• melituria
• curiously enough
• boondagger
• autocorrelators
• aubade
• maternity / sick / compassionate leave
• roughnesses
• Bifidobacterium
• open call
• Stagirite
• succinyl
• scotochromogen
• M.I. Mech. E.
• Brusa
• meaniing
• double armature
• on the home front
• cholestatic
• bear down on sb/sth
• glassy alloy
• link trainers
• inlayings
• miniating
• cart horses
• malaprops
• nepheline
• fluters
• inborn
• peat plant block
• mescal
• phylogenetical
• architectural photogrammetry
• transuranics
• cardiogenic plate