孩子们在后院玩他们的新旋转球套装。

The kids are playing with their new swingball set in the backyard.

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The kids are playing with their new swingball set in the backyard.

swingball 是一个复合词,由 swing(摇摆、旋转)和 ball(球)组成,指一种户外游戏设备,球通过绳子固定在杆子上,玩家用球拍击打旋转的球。

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