表示人类复数用humanbeingsMen,womenandchildrenareallhumanbeingsThehumanbeingisaprimate.人类是灵长类动物Ahumanbeingisaningeniousassemblyofportableplumbing.人类,是一堆可以随意拆卸的铅管零件的巧妙装配。n.人类n.Onlyhumanshaveanaturaluprightposture.n.只有人类才有自然直立的姿势。n.OversixbillionhumanspopulatetheEarth.n.退一步说,有超过六十亿人类生活在大地上。名词human的复数形式这两个我建议用humanbeings