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
That's not the issue.
那不是我们讨论的话题。
I'm going to show him how to speak French.
我正要指点他如何讲法语。
I didn't have any supper, except a piece of bread, because I didn't feel very well.
晚餐我只吃了一片面包，别的什么也没吃，因为我觉得不舒服。