tracer的词源

英文词源

tracer (n.)

c. 1500, "one who tracks or searches," agent noun from verb form of trace (n.1). Meaning "bullet whose course is made visible" is from 1910.

中文词源

tracer：示踪迹，曳光弹

来自 trace,追踪，描绘，勾勒，-er,表物。引申词义示踪迹，曳光弹。

该词的英语词源请访问找单词词源英文版：tracer 词源，tracer 含义。