Boundary trace
[计] 边界道
🧩 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
I understand. But tell me.
我能理解。告诉我。
Congratulations on your happy new year.
我恭喜你新年快乐。
Beggars almost sell themselves as human being to arouse the pity of passers-by.
好像只有流浪汉是个例外，乞丐出售的几乎是他本人，以引起过路人的怜悯。