The laser cuts short ribbons of tissue about one-millimeter across.
激光能将丝带组织切成1毫米大小。
2
The rapid acceleration-deceleration forces of violent shaking can cause much more damage to brain tissue and blood vessels than a direct bump to the head caused by a short fall.
猛烈摇晃时，迅猛加快—减慢产生的力量给脑组织和血管带来的损害可能比突然跌落直接撞击头部要严重得多。
3
Doctors already deploy more traditional lasers to remove tattoos, correct short-sightedness, cut tissue or whiten teeth.