The fish swim about in the water.
鱼在水里游来游去。
I can only swim about half a length freestyle.
我用自由式游泳只能游半趟。
I can only swim about half a length free-style.
我用自由式游泳只能游半趟。
Another thing that's different about human cells and animal - human cells and bacterial cells is that many bacterial cells can swim and can exist in suspension, that means just suspended in a fluid.
人类细胞和动物细胞--,和细菌细胞,另一个重要不同是,许多细菌细胞可以游动,可以生活在悬浮液中,就是说可以悬浮在液体中
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