人物合称，指 唐 盖文达 、 盖文懿。
当第二盖相对于第一盖由靠近位置旋转至远离位置 对，第三盖相对于第一盖由缩入位置移动至伸出位置。
When the second cover rotates from close position to remote position relatively to the first cover, the third cover moves from contraction position to expansion position relatively to the first cover.
第二只小猪用树枝盖他的房子，比草屋结实一点。
The second little pig built his house with sticks, which was a little bit stronger than the grass house.
第二只小猪的屋子是树枝盖的。
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