| 摘要 |
In a preferred embodiment of the invention, a toilet seat element having an upper planar or flat surface with an oblong hole therethrough wide at a back portion and tapered to a narrow width at a forward portion of the hole, has an uprightly mountable back-shield element which may serve alternately as a urinal or a back for support of a backwardly-leaning child, alternately positionable at any of different mounting positions located along a length of the hole from the wider portion to the narrow portion, with the back-shield element extending across the hole transversely along the width thereof such that when positioned near the back a wider hole is exposed and when positioned near the front a narrower hole is exposed, and with a ramp mountable at alternate positions providing for the climbing to the toilet seat element from the floor level, and each of the ramp and the back-shield element mounting mechanisms also providing clamping mechanisms preventing the toilet seat element from shifting laterally thus making the toilet seat element sturdy.
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