滚: Ⅰ动词1.(翻转; 滚动) roll; turn round; trundle 短语和例子打滚儿 turn a somersault; 滚进 roll-in; 满地乱滚 roll all over the ground; 滚铁环 trundle a hoop; 他滚了一个雪球。 he rolled a snowball. 球滚到桌子下面去了。 the ball rolled
Example Sentences:
1.
The curve traced by a point on the circumference of a circle that rolls on a straight line 圆滚线，摆线圆周上任一点在一条直线上滚动时所形成的曲线
