Keratan
角质素
🗣️ 情景例句
I'm thrilled for you, Grandpa.
我真为你兴奋， 爷爷。
Would you mind calling back sometime?
你介意找个时间打电话回来吗？
Recently, one of Jeremy's closest friends asked him to make a speech at a wedding reception.
最近，杰里米的一个最亲密的朋友请他在一个婚礼上祝词。