Polypeptidase
多肽酶
🗣️ 情景例句
Thank you, Mr. Johnson.
谢谢你。约翰逊先生。
Labour is often the father of pleasure.
勤劳常为快乐之源。
With these words the tiger jumped into the river. He did not come out again.
说完这些话，老虎就跳进河里去了。他再也没有上来。