CAT scannerWiktionary 原文英美构词拆解CAT scan词干+-er后缀-er(added to verbs) A person or thing that does an action indicated by the root verb; used to form an agent noun. · (added to verbs, informal) A person or thing to which the root verb is done or can be done satisfactorily.也可拆解为CAT词干+scanner词干词源说明From CAT scan + -er, or CAT + scanner.释义名词noun1A scanner used in a CAT scan