| 摘要 |
A goal mouth structure having simultaneously a large goal mouth and a small goal mouth. The goal mouth structure is a complex goal mouth constituted by at least two goal mouths of different sizes. In the complex goal mouth, the smaller goal mouth (2) is arranged within the larger goal mouth (1). Complex goal mouth structures of different forms can be obtained by adjusting distance between the front end, the left end and the right end, and the lower end of the smaller goal mouth (2), and also the front end, the left end and the right end, and the lower end of the larger goal mouth. An inflatable frame structure can be employed for the goal mouth structure. A top left goal post and a top right goal post can be arranged on top of the larger goal mouth (1); an even smaller goal mouth (20) can be arranged within the smaller goal mouth (2), thereby forming a general-purpose complex goal mouth structure suitable for various ball games.
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