needless

to need; to require; essential; indispensable

to urgently need; urgent need

a possible period of want or need

to urgently need; urgent need

supply and demand

domestic demand

military supplies

(economics) rigid demand; inelastic demand (abbr. for 剛性需求|刚性需求[gang1 xing4 xu1 qiu2])

external demand (demand for a country's goods and services from foreign markets)

necessary (for); required

on demand; according to demand

special need; particular requirement

inessential

each takes what he needs (idiom)