translation.en: The two-gram carbon fiber cage around it prevents the propellers from entangling, but essentially the collision is absorbed and the robot responds to the collisions.
translation.zh: 两克重的碳纤维笼子包围着它 使螺旋桨不会受损， 但最关键的是，撞击被吸收了， 机器人能够对撞击做出反应。