Radioactive tracer
[化] 放射性示踪剂
🧩 词语组成解析
tracer
['treisə]
n. 追踪者，描图者，（铁笔等）绘图工具;
🗣️ 情景例句
And I love you. Isn't that enough?
我爱你。难道这还不够吗?
Dead men tell no tales.
死人不会搬弄是非。
Before she had anchored, the men from the boats had climbed on board and the decks were son covered with colourful rugs from Persia, silks from India, copper coffee pots, and beautiful handmade silverware.
大船还未下锚。小船上的人就纷纷爬上客轮。一会儿工夫，甲板上就摆满了色彩斑斓的波斯地毯。印度丝绸。铜咖啡壶以及手工制作的漂亮的银器。