阳性 yángxìng HSK7 positive Origin Definitions Defs Strokes Stroke Words Sentences Sents 伪阳性 wěiyángxìng false positive 假阳性 jiǎyángxìng false positive 呈阳性 chéngyángxìng test positive to test positive革兰阳性 gélányángxìng Gram-positive Gram-positive (bacteria)