lèi fēng shī yīn zǐ / yáng xìng / bìng bù / yī dìng / yì wèi zhe / huàn yǒu / fēng shī bìng

类风湿因子阳性并不一定意味着患有风湿病。

A positive rheumatoid factor does not necessarily mean suffering from rheumatic disease.