Trace constituent
[化] 痕量成分
🧩 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
Thank you very much. So we can put our minds at ease.
非常感谢，这样我们就放心了。
Suspicion is the poison of true friendship.
猜疑伤害莫逆之交。
There is a table in the room.
客厅里有张桌子。