Because there is no abrasion between the concave and convex , the nut is reusable .

因为凹面与凸面没有磨损，螺母可以重复使用。

The moon was above us , a convex shape almost crushing us , a ruined roof , studded with holes like a cheese grater .

月亮就在我们上方，凸面对着我们仿佛要把我们挤压粉碎，像一个荒废的屋顶，满目疮痍像一个干酪粉碎机。

Later , at their country house , she works at a large convex interactive touch screen for illustrators .

不久之后在他们的乡间住所中，她在一面巨大的凸面互动触摸屏上画着插画。