| 摘要 |
<p>The advantages of a waterbed are appreciated by many people, which are at present not able to accommodate such an item in their home because of its enormous weight. The new design of a water bed is provided with several chambers to be filled with air or a suitable kind of gas to be combined with water-filled chambers. The elastic and supportive quality of a water bed can be enjoyed when living in an upper floor or a rented flat, on a journey in a camper van, or in a hospital.</p> |
