Trace fossil
踪迹化石
🧩 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
Grandpa, you are a terrific guy!
爷爷， 你真了不起！
Know something of everything and everything of something.
既要有一般常识，又要有专业知识。
If I place an order now, when would you be able to ship it?
如果现在下单子，什么时候可以出货？