three wayadj.三路的threenum.三n.三；三个adj.三个的three yin and three yang三阴三阳three-dimensional tree[计] 三维树three-ridge plungepool三坎式水垫塘three-strand splitting三线切分three-step instruction三步教学法three pathogenic factors三尸three-dimensional goal“三维”目标Three Gorges dam project三峡大坝工程three-legged structure三角结构three-layout structure三层结构