木虱会侵害活体植物并啃咬它们的茎。Woodlice attack living plants and gnaw at the stems.这种植物多刺的茎阻碍了鱼儿对它的啃咬.The plant's thorny stalk discourages fish from nibbling on it.它的这些用于啃咬的工具永远不会变钝, 因为它们自己会使之锋利起来.These cutting tools never get bl...