Trace-element
[医]微量元素
🧩 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
element
['ɛləmənt]
n. [化]元素;要素;原理;[电]电阻丝;
🗣️ 情景例句
Well, I had a really nice time.
嗯 我玩得很开心。
Take your baggage to the baggage section.
把你的行李拿到行李房去。
'You needn't have said that,' my wife answered.
“你没必要这么说，”我妻子回答说，