Polypeptidase
多肽酶
🗣️ 情景例句
Can we help?
我们可以帮忙吗？
Life is a comedy to him who thinks and a tragedy to him who feels.
对善思考者，人生为喜剧；对凭感觉者，人生为悲剧。
Mr. Green doesn't climb down the chimney. He waits until the children are asleep.
格林先生不从烟囱上爬下来，他等候孩子们都睡熟。