The rest of the shell is rolled towards the tooth in an anticlockwise direction, in order to remove it.
为了脱身，其余的壳就会以逆时针方向绕着牙齿旋转。
Some species of snail have shells that spiral out in an anticlockwise direction, but it is much rarer.
有些种类的蜗牛有着从里到外逆时针的螺壳，不过这少见的多。
The direction of rotation is often constant in a species; for example, Convolvulus always rotates in an anticlockwise direction.
在特定的物种中旋转的方向是恒定的，例如旋花科植物总是逆时针方向旋转。
We have proposed an arithmetic of this kind to eliminate the vertex in a circling way, ignoring the knaggy character and the deasil or anticlockwise direction of the plane polygon.
概述了平面多边形三角形剖分的各种算法，提出了一种不考虑多边形的凸凹性、顶点顺时针或逆时针走向循环消除顶点的平面多边形三角剖分算法，并给出了实例。
We have proposed an arithmetic of this kind to eliminate the vertex in a circling way, ignoring the knaggy character and the deasil or anticlockwise direction of the plane polygon.
概述了平面多边形三角形剖分的各种算法，提出了一种不考虑多边形的凸凹性、顶点顺时针或逆时针走向循环消除顶点的平面多边形三角剖分算法，并给出了实例。
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