新华社报道如下:Lab test confirmed that 23 tigers in a private zoo in eastern Thailand have died of infecting with avian influenza virus, officials said here on Tuesday.
Tigers in the private zoo started to show flu symptoms since last Thursday and altogether 23 have died until Tuesday.
Symptom表示:“征兆,征候;症兆,症候”,例如:Fever is a symptom of many illnesses.(发烧是许多疾病的症兆。)和symptom相关的词组有:clinical symptom(临床症状);well-defined symptom(明显症状);deficiency symptom(营养缺乏症状);deficient symptom(内分泌缺乏症状);poisoning symptom(中毒症状);eruption symptom(喷发征兆);premonitory symptoms(地震征兆)等。