Tracer element
[化] 示蹤元素
?? 詞語組成解析
tracer
['treis?]
n. 追蹤者，描圖者，（鐵筆等）繪圖工具;
element
['?l?m?nt]
n. [化]元素;要素;原理;[電]電阻絲;
??? 情景例句
I'd love a cup of coffee.
我是想來杯咖啡。
I really care for the students in my class.
我真喜歡人班上的學(xué)生。
I would like you to change this blouse, or else give me my money back.
我想要你換掉這件襯衣，要不就把錢退給我。