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
She's got him under her thumb.
她把他给管住了。
Sometimes Henry peeps into his sister's diary.
亨利有时候会偷看他姐姐的日记。
No, it's a duck, not a chicken. Oh, can you hear some animals?
不对，是只鸭，不是鸡。噢，你听到一些动物的叫声没有？