| 摘要 |
A toy comprises a set of building blocks of progressively-decreasing sizes each of hollow configuration and open at its opposite ends. Each block is formed with an outwardly-extending peripheral flange at one end and an inwardly-extending peripheral flange at its opposite end, the dimensions of the blocks and flanges being such as to permit them to be assembled in a configuration wherein the blocks increase in size or in another configuration wherein they decrease in size.
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