Fibers. korff's
[医] 科尔夫氏纤维, 生牙质纤维
🗣️ 情景例句
There's nothing wrong with hard work.
刻苦没错。
How long have you been studying English?
你学英语多久了？
Dad, this is Li Lei. Li Lei, this is my father.
爸爸，这是李磊，李磊，这是我爸爸。