The most adventuresome, a pied morsel of pig with a white band like a belt around his middle, wobbled over to the sow's side.

的一头， 中间有一条像腰带一样的白色带子， 摇摇晃晃地走到母身边。

The process is thought to have started when some blundering or adventuresome bacterium either invaded or was captured by some other bacterium and it turned out that this suited them both.

据认为，该过程始于某个行为草率或敢于的细菌。受到了侵犯，就被别的细菌俘虏。结果，双方都感到满意。