Video: 0262_slide_pen_2
Phase transition: melt
State before: solid:non_particulate:flexible body
State after: liquid:viscous
Object: In the process of sliding the pen tip, all the parts of the green ink which at the initial frame
目标物体: 在滑动笔尖的过程中，位于初始帧中所有绿色墨汁的部分