my tracing的用法和樣例：
例句
- While carrying out ray tracing in mountains, altiplanos, or other rugged topography regions, one must make some improvements.
在山地和高原等地表起伏地區進行射線追蹤時，需要做一些細節上的改進。 - Besides, a global ray-tube tracing method is presented, which is to trace the global wave tubes instead of the many small ray tubes for simulating wave propagations in urban areas.
另外，本論文提出廣射線柱追蹤法，其中乃是追蹤整體射向建築物表面之輻射電波，有別於一般射線追蹤法將發射天線的輻射電波以多個小射線柱來模擬。
