tracerKK [ˋtresɚ] /ˈtɹeɪsɚ/发音名词1曳光弹军事Red tracers streaked across the night sky above the valley.红色的曳光弹划过山谷上方的夜空。2示踪剂、显影剂医学The doctor injected a radioactive tracer before the scan.医生在扫描前为病人注射了放射性示踪剂。3追查员、查寻人员较旧式The family hired a tracer to find their missing relative.这家人雇了一名追查员寻找失踪的亲人。4查询单、追查通知物流The airline put a tracer on my lost suitcase.航空公司针对我遗失的行李箱发出了查询单。5描图器、描图工具少用She used a tracer to copy the pattern onto the fabric.她用描图器把图案描到布料上。6追踪程式、追踪器电脑Developers ran a tracer to locate the bug in the code.开发人员执行追踪程式来找出程式码中的错误。用这个字练口说→