VOA慢速英语:研究人员在人的呼吸中测试癌症

biomarker – n. biological evidence of a process, event, or condition

allow – v. to permit (someone) to have or do something; to let (someone) go or come in or out

symptom – n. a change in the body or mind which shows that a disease is present

mask – n. a device covering part of the face, including the mouth

stabilize – v. to make or become unlikely to change suddenly or greatly

profile – n. records showing information about something

exhale – v. to breathe out.