“棱角”怎么读？

地上铺满了棱角锋利的石子。The ground was strewn with sharp-edged pebbles.我用砂纸把棱角打磨光滑.I rounded off the corners with sandpaper.他的话很有棱角.His remarks were pointed....

“棱角”的英语可以翻译为：edges and corners，edge，pointedness ...