瑞士老人在老年活动中心里兴致勃勃地打着乒乓球,看起来,那身手绝对不逊于年轻人。再仔细观察一下,您就会发现,在这里进行的乒乓球运动和我们国家常见的还是有一些不同呢。这里的球网比普通的要略高一些,所用的乒乓球也比普通的稍大一些。因为,乒乓球加大直径以后,空气阻力就会增加,减缓了乒乓球的运动速度,球不会被打飞,再加上球网 The Swiss elderly are playing ping-pong enthusiastically in the center for the elderly and it looks like they are definitely not inferior to young people. A closer look, you will find that the table tennis here and our country is still common there are some differences yet. The net here is slightly higher than normal, and the ping pong used is slightly larger than normal. Because, after increasing the diameter of table tennis, the air resistance will increase, slow down the speed of table tennis, the ball will not be flying, coupled with the net