Nitrococcus
亚硝化菌
🗣️ 情景例句
OK. Let's talk.
好， 我们谈谈吧。
Have you washed anything?
你洗东西吗？
When Aunt Huang came back, I was so tired. In the evening Liu Ming came to see me.
当黄阿姨回来的时候，我累极了。晚上刘明来看我。