be/stand in need of
1. 需要
They are now in need of help.
他们现在需要帮助。
if need be
1. 如果需要的话
If need be, I'll go and have a look.
如果必要, 我就去看一看。
习惯用语A friend in need is a friend indeed.1.患难之交是真朋友。at (one's) need1.在紧急时; 在困难时; 在危险时be [stand] in need of ... ...1.需要...cryingneed1.迫切的需要do one's needs1.[俚]解大[小]便had need (to) do sth.1.应该做某事have need of [for]1.需要做have need to do sth.1.必须做某事If need be [were, require]1.如果必要的话in need1.在危难中, 在危急中in case [time] of need1.在紧急的时候N-makes the old wife trot.1.[谚]急时老太婆也能跑。need not have1.[后接过去分词]本来不需要What need(s)?1.为什么要这样?特殊用法achievement need1.进取需要actual need1.实际需要adolescent need1.青少年的需要borrowing need1.贷款(的)要求cash need1.现金需要consumer need1.消费者的要求energy need1.能源需要financial need1.财政需要long-standing need1.长期未能满足的迫切需要marginal need1.边际需要national need1.政府职能需要primary need1.基本[第一]需要social need1.社会需要subsidy need1.津贴需要, 必要津贴额treatment need1.作业法要求unit manpower needs1.单位产品必要的劳动消耗量user need1.用户需要