Nitrobacterieae
[医] 硝化菌亚科
🗣️ 情景例句
If you'd like to hear some new English songs, I suggest you download them from the web.
如果你想听一些新的英文歌，我建议你上网下载。
What do economists say about the present crisis?
经济学家们对于现在的危机做何说法？
She had a bad cold.
她患了重感冒。