科学家们设计了一种只凭手腕运动就可以抓握物体的机械手。这只由英国剑桥大学研究团队研发的3D打印机械手中被放置了传感器，从而能够 “感知” 它所触摸的物体。 Researchers say their robotic hand can handle items that are currently too delicate for machines. The hand uses wrist ...

On Oct. 1, the U.S. Senate failed to pass a new short-term funding bill before government funds ran out, marking the first government shutdown in nearly seven years. At midday on Tuesday, the U.S.