If you place a spiralling shell down on the table with the spiral facing up then in most shells the spiral evolves in a clockwise orientation from the centre of the shell out.
如果你把一只螺纹贝壳放在桌上，螺旋面朝上，绝大多数的螺线是顺时针方向从中心到边缘展开。
It is understood that the "small shell" Campus Safety Campaign is the Next Generation Committee of the Chinese Community Cultural Centre and Mengniu milk to jointly promote a student of public action.
据了解，“小贝壳”校园安全大行动是由中国关心下一代工作委员会公益文化中心以及蒙牛学生奶共同推广的一项公益行动。
It is understood that the "small shell" Campus Safety Campaign is the Next Generation Committee of the Chinese Community Cultural Centre and Mengniu milk to jointly promote a student of public action.
据了解，“小贝壳”校园安全大行动是由中国关心下一代工作委员会公益文化中心以及蒙牛学生奶共同推广的一项公益行动。
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