If you take your thumb and your index finger and look right where they meet -- go ahead and do that now -- -- and relax your hand, you'll see a crinkle, and then a wrinkle within the crinkle, and a crinkle within the wrinkle. Right?
如果你们看一看你们的拇指与与食指之间的部分-- 现在就可以看一下-- 把手放松，你们可以看到一段皱纹， 然后这皱纹扩展成更多的皱纹，然后更多，是吧？