A trace
[电] A扫描轨迹
🧩 词语组成解析
trace
[tres]
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
No,
不对，
Excuse me, but could you give me some change?
劳驾，你能换些零钱给我吗？
Can we do anything to help?
用我们帮忙吗？