coarser
adj. 粗糙的；粗俗的；下等的（coarse 的变形）
例句
The Schreger lines are coarser in texture.
施雷格线在纹理上更粗糙。
Roles and responsibilities (at coarser level than OO)
角色和职责（在比OO更粗的级别上）
The coarser the grains of sand are, the darker they appear.
沙粒越粗，呈现的颜色就越深。
