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
We could call it Deep Sleep Country Air.
我们可以称它为"沉睡的乡村空气"。
More of our worries come from within than from without.
烦恼发乎内者多于发乎外。
My father is at home looking for the ticket.
我爸爸正在家里找票呢！