a toy that consists of two round pieces of plastic or wood joined together, with a piece of string wound between them. You put one end of the string around your finger and make the yo-yo go up and down.悠悠球,溜溜球,摇摇(拉线使圆盘旋转着沿线上下来回移动)
He kept bouncing up and down like a yo-yo.他像个悠悠球似的不停地上窜下跳。🔊🔊