妈妈：因为我们的身板没有骨骼的支撑，只能爬，又爬不快。所以要这个壳的掩护！
Mom: because our body does not have skeleton's support, can only crawl, also crawls not quickly. Therefore wants this shell protection!
妈妈：因为我们的身体没有骨胳的支撑，只能爬，又爬不快。所以要这个壳的保护！
Mother: not because our body's skeletal support, can only climb, and climb unpleasant. So want to protect this shell!
妈妈：因为我们的身体没有骨胳的支撑，只能爬，又爬不快。所以要这个壳的保护！
Mother: not because our body's skeletal support can only climb and climb unpleasant. So want to protect this shell!
小蜗牛：毛虫姊姊没有骨头，也爬不快，为什么她却不用背这个又硬又重的壳呢?。
Small snail: sister no bones caterpillars but also unpleasant climb why she did not back the hard shell it again?
小蜗牛：可是蚯蚓弟弟也没骨头爬不快，也不会变成蝴蝶他什么不背这个又硬又重的壳呢？
Small Snail: but my brother did not earthworms unpleasant climb the bones will not become a butterfly he does not back the hard shell it again?
小蜗牛：可是蚯蚓弟弟也没骨头爬不快，也不会变成蝴蝶他什么不背这个又硬又重的壳呢？
Small Snail: but my brother did not earthworms unpleasant climb the bones will not become a butterfly he does not back the hard shell it again?
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