Sphaerotilus
[医] 球衣细胞属
🗣️ 情景例句
Don't be mixed up in such business.
不要跟这种事有所关连。
Why are you going back?
你为什么回来？
I mean powder that is made from fish, blood and bone.
我是指用鱼、血和骨头制成的粉末。