| 单词 | tracer |
| 释义 | Tracer nnoun.personan investigator who is employed to find missing persons or missing goods Hypernyms:detective investigator police detective tec Inherited Hypernyms:tracerdetectivepolicemanlawmandefenderpreserverpersoncausal agentphysical entityentity Inherited Hypernyms:tracerdetectivepolicemanlawmandefenderpreserverpersonorganismliving thingwholeobjectphysical entityentity nnoun.artifactan instrument used to make tracings Derivationally Related Form:trace Hypernyms:instrument Inherited Hypernyms:tracerinstrumentdeviceinstrumentalityartifactwholeobjectphysical entityentity nnoun.artifact(radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes Topic:radiology Hypernyms:radioisotope Inherited Hypernyms:tracerradioisotopeisotopeatomsubstancematterphysical entityentity Inherited Hypernyms:tracerradioisotopeisotopeatomsubstancepartrelationabstractionentity nnoun.artifactammunition whose flight can be observed by a trail of smoke Synset:tracer bullet Hypernyms:ammo ammunition Inherited Hypernyms:tracerammunitionweaponryinstrumentalityartifactwholeobjectphysical entityentity |
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