Trace element
[化] 痕量元素
📖 牛津释义
trace element
substance occurring or needed only in extremely small amounts (esp in the soil, for the proper growth of plants) 微量元素, 痕量元素（尤指土壤中的, 植物正常生长所需要的）.
🏥 医学释义
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
So now I'm taking a flight on Monday instead.
所以我现在要改搭星期一的班机走。
When would you like to return?
你打算什么时候回来？
she said she was not going to make another.She said she was going to retire.
她不准备再拍电影了。她说她准备退休。