奶子因受到碰撞或挤压而产生变形
谓之
https://pbs.twimg.com/media/Del-2dvV4AAc0UG.jpg
https://pbs.twimg.com/media/Db1iYLzUwAE80MK.jpg
https://pbs.twimg.com/media/DZdPbZWVoAAOOdU.jpg
https://pbs.twimg.com/media/DcPyg0KVAAY1UJd.jpg
https://pbs.twimg.com/media/DdUK41pVwAAv7Sf.jpg
https://images.plurk.com/VXX9VFH4lWDjDEkNrJjR.jpg