1. At such contacts the scale can slide up the asperity, so that the retched mechanism is not operative. 在这种接触中，鳞片能滑过对方的粗糙表面，所以棘轮机理不起作用。
2. "Yes, flowers" my mother replied with some asperity, as though she would have nothing said or implied against flowers. “是的，花儿，”我妈妈回答，声音有点严厉，似乎她不许人家说——或者暗示——反对花儿的话。
3. At present, goggles myopic lens into the surface of the mirror and asperity absolutely flat mirror the two major types. 目前近视泳镜的镜片分为表面微凸镜面和绝对平面镜面两大类型。
英英解释
n.
1. something hard to endure
2. harshness of manner
