Thymolysin
溶胸腺素
🗣️ 情景例句
Have you ever been to Niagra Falls?
你去过尼亚拉加瀑布吗？
What's your nationality?
你是什么国籍？
A recent article in a weekly newspaper, for instance,
例如，最近一家周报刊登了一篇文章，