随着年龄的增长,身体的许多组织特别是骨骼都会慢慢退化,因此许多老年人都患有骨质疏松症,老年朋友乘车时需要多注意。如果乘车时在车上低头打盹儿,全身肌肉就会有不同程度的放松,此时急刹车,头部一瞬间被甩向前方,停下来后,车尾的乘客因为较大 As you age, many of your body’s tissues, especially the bones, slowly degenerate, so many elderly people suffer from osteoporosis and older friends need more attention when driving. If you ride in the car bow to take a nap, body muscles will have varying degrees of relaxation, then brakes, the head was thrown to the front of an instant, stopped, the rear passengers because of the larger