| 摘要 |
A track set is disclosed herein. The track set includes a track portion configured for receiving at least one device configured to traverse within the track portion, and a rotatable track portion. The rotatable track portion includes a receiving member and a generally spiral portion. The rotatable track portion is selectively rotatable about an axis. The receiving member is positioned to selectively receive the at least one device from the track portion as the rotatable track portion rotates. Movement of the device within the spiral portion generally maintains rotation of the rotatable track portion about the axis.
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