vt. 跟踪,追踪;追溯,探索;探索;查找;
vi. 沿着一小径或道路前进;可以追溯的;
n. 痕迹,踪迹;微量,极少量;[植](脉)迹;痕迹;
trace(draw)→回溯
🗣️ 情景例句
you had some doubts about wanting to go to Michigan.
你对上Michigan大学有些疑虑。
The camera is out of order.
这照相机出毛病了。
People who work in offices are frequently referred to as white-collar workers' for the simple reason that they usually wear a collar and tie to go to work.