Nitrobacteraceae
硝化桿菌科
🗣️ 情景例句
When does he arrive?
他什么时候到？
Compared to the previous model, our new model is less expensive and easier to use.
与旧型机比较我们的新型价格便宜且更容易操作。
You certainly did!
你吼得好凶呀！