Factors w
[医] W因子, 生物素
🧩 词语组成解析
n. 因素（factor的复数）
🗣️ 情景例句
Don't rush, take your time.
别急急忙忙的，慢慢来。
Which one do you want to buy?
你买哪一个？
but she was fast asleep,
但她睡得很熟。