single payment的相关资料：
临近单词
single cusp
single
single side cantilever construction
single instruction multiple threads
single cotton-covered enamel wire
Single Readiness Information System
Single-handed Dinghy men - Finn
single frequency propagation regime
Single ridge globoidal indexing cam
single-fluid process of injection
single-pole-piece magnetic head
Single-handed Dinghy open-Laser
