• 勾画出

tracesn.痕迹；遗迹名词trace的复数形式.tracen.痕迹；微量；踪迹v.追踪；描绘；找出根源trace daemon跟踪进程Trace Design轨迹设计trace diagram描迹图trace catcher痕量捕集器trace dements微量元素trace of tool工具痕迹trace gathers道集trace fossils遗迹化石trace mercury微量汞trace colloid示踪胶体

1. The pen traces out the signals as the telescope scans the sky.
   记录笔把望远镜了望宇宙时获得的各种信号描绘出来。