Traceyn.特雷西; 特蕾西
tracen.痕迹;微量;踪迹v.追踪;描绘;找出根源
trace plutonium痕量钚
traceable paper描图纸
trace labelling示踪标记(术); 跟踪标记(术)
trace list data跟踪表数据
trace an animal追踪动物
traceless crime不留痕迹的犯罪
trace diagnosis跟踪诊断
trace criterion迹准则
trace separation扫描线分离
trace characters摹写字体