床褥的软硬也是可以的。如果是软身的，要留意其厚度以免婴儿俯卧时窒息。
If it is soft, make sure it is not a thick one for fear of suffocation if baby lie prone.
当你做你喜欢的活动时，比如俯卧撑，你不需要考虑天气状况。
When you do activities you enjoy, such as push-up, you don't have to consider weather conditions.
作为2004年国际自行车设计大赛的决赛车辆，这辆由布莱尔·哈斯蒂（Blair Hasty）手工制作的自行车采用俯卧位将骑手从卧姿时背部受压的情况下解脱出来。
A finalist in the 2004 International Bicycle Design Competition, Blair Hasty crafted his bike to take the pressure off of a rider's back by seating them in a prone position.
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