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
That was Alexandra.
是Alexandra打来的电话。
Has he studied French very long?
他学习法语很长时间吗？
I'm his fan.
我是他的影迷。