two /tu:/ num. 二，两个(可作主语)，两岁，两点钟：one or two 一两个 He is only two. 他才两岁。The pub closed at two. 酒吧两点钟关的门。Kill two birds with one stone.［谚］一箭双雕。He tore the piece of paper in two.他把纸撕成两半。