Flagella is an unique structure that presents in appropriate half of bacillus,few coccus,and all of spirilla and vibrio.
鞭毛是细
的一种特殊结构,约半
的杆、极
所有的螺旋及弧都有鞭毛。
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Additionally, the cell wall helps maintain their shape: the round-shaped bacteria are called cocci, the rod-shaped ones are called bacilli, spiral-shaped ones are spirilla, and sometimes the same bacteria can have multiple forms in which case they're called pleomorphic.
此外，
胞壁有助于保持其
：
的称
，棒的叫做杆，螺旋的是螺旋，有些具有不同的态，因此它们被称多。
