Selective trace
[计] 选择跟踪
🧩 词语组成解析
selective
[si'lektiv]
adj. 精心选择的;选择的，不普遍的;淘汰的;
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
Please pack your products in accordance with our requirements.
请你方按照我们的要求包装货物。
We never know the worth (or value) of water till the well is dry.
井枯方知水可贵。
The pirates would often bury gold in the cave and then fail to collect it.
海盗们过去常把金子埋藏在那个洞里，可后来却没能取走。