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
You really need to eat more; you're too skinny.
你太瘦了，真得多吃点。
Do you think it's going to rain tomorrow?
你认为明天将下雨吗？
What is worth doing is worth doing well.
只要你觉得某事值得去做，就一定要把它做好。