R factors
[医] R因子, 叶酸
🧩 词语组成解析
n. 因素（factor的复数）
🗣️ 情景例句
You win, and I cook dinner for the entire family.
你赢了 我给全家做晚餐。
Are you pulling my leg?
你在开我玩笑吗？
Oh, and by the way, my wife wants to know if Mary needs any help.
喔，顺便问一问，我妻子想知道玛丽是否需要帮忙。