positive reaction的用法和樣例：
例句
- If the test is positive,it means that traces of forbidden drugs have been found.
如檢驗呈陽性反應，就意味著發現了服有禁用藥品的蹤跡。 - In some cases of nonspecific enteritis positive reactions were observed.
在一些非特異性腸炎病例中，觀察到陽性反應。 - The feedback has been very positive, indicating that Evergreen Tui-Na helps relaxation and relieves the constipation problem.
病人的反應對長青保健推拿是相當肯定的，這套推拿確實可以幫助身體放鬆和減輕便秘問題。
