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'd like to say something first.
我想先说几句话。
The uneducated are more to be pitied than blamed.
对未受过教育的人们更多的是要可怜而非责怪。
Why did you come here?
你为什么来这儿呢？