tracer

名词 n.
中文释义
英 /ˈtɹeɪsə(ɹ)/|[ˈtʃɹeɪsə(ɹ)]    美 /ˈtɹeɪsɚ/|[ˈtʃɹeɪsɚ]

英文释义

名词 n.
  1. A compound, element, or isotope used to track the progress or history of a natural process.
  2. A round of ammunition for a firearm that contains magnesium or another flammable substance arranged such that it will burn and produce a visible trail when fired in the dark.
  3. The act or state of tracking or investigating something.
    — We have a five-man tracer on him now. He's heading for a Vorster cell on Michigan Boulevard, and he's drunk as a lord. Should we intercept him?
  4. A request to trace the movements of a person or an object, such as a shipment.
    — The next morning when she awoke, she told Darcy what had happened, and Darcy agreed that she should go to the police and this time ask them if they could put a tracer on her incoming phone calls, just in case he called again.
  5. A person who traces something.
  6. A device or instrument used to assist in making tracings.
  7. A process that traces something, such as the path of execution of a program during debugging.

词形变化

tracers plural

词汇关系

衍生词
bead tracer contact tracer dye tracer filtrate tracer flow tracer gas tracer intrinsic tracer nanotracer neurotracer packet tracer path tracer radioactive tracer radiotracer ray tracer signal tracer skip-tracer skip tracer tracer ammunition tracer bullet tracer element tracer log tracer round tracer shell

词源

Etymology tree
English trace
English -er
English tracer
From trace + -er.
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