减少

reduce; decrease; fall; drop; lighten; decline; diminish; cut down; lessen; lower; curtail; pare down; retrench; downscale; scale down; falls off; drop off; reduced; decreased; low; diminished; down; less; downwards; reduction; loss; fall-off; cut; cutback; abatement; diminution; decrement; de-

不必要的

unwanted; needless; unnecessary; superfluous; otiose; uncalled for; uncalled-for

伤亡

casualties; injuries and deaths; loss; suffer casualties