three rowadj.三行的threenum.三n.三；三个adj.三个的three referee system三人裁判制three series theorem三级数定理three time estimates三点估计threefold degeneracy三重简并性Three Immortals Pill三仙丸three-sheave block三轮滑车three entangled atom三纠缠原子three-phase supply三相电源three-gluon vertex三-胶子顶点threevein aster herb山白菊