Trace interval
[计] 跟踪区间, 追踪区间
🧩 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
You haven't changed much in fifty years.
你五十年来没有什么变。
You are welcome.
不客气。
I brought it here three days ago.
3天前。