Trace-elements
(trace-element 的復(fù)數(shù)) [醫(yī)]微量元素
?? 詞語(yǔ)組成解析
trace
[tres]
vt. 跟蹤，追蹤;追溯，探索;探索;查找;
vi. 沿著一小徑或道路前進(jìn);可以追溯的;
n. 痕跡，蹤跡;微量，極少量;[植]（脈）跡;痕跡;
trace(draw)→回溯
n. 原理, 基礎(chǔ)
??? 情景例句
Well, perhaps,
好的， 也許，
Is there a funny show on television tonight?
今晚有精彩的電視節(jié)目嗎？
Everybody on board was worried and we were curious to find out what had happened.
飛機(jī)上的人都很著急，大家都急于想知道究竟出了什么事。