Nitrocystis
硝化囊菌属
🗣️ 情景例句
A community center
一个社区中心
This has been a very confusing time in my life.
现在，是我的人生中最混乱茫然的时期。
All at once, a rabbit came out of a hole.
突然，一只兔子从一个洞中跑了出来。