coarsen
v. （使）变粗
过去式：coarsened 过去分词：coarsened 现在分词：coarsening 第三人称单数：coarsens
近义词：roughen，harden，toughen，season，stiffen，thicken，
英英释义
Verb
- make or become coarse or coarser;
"coarsen the surface" "Their minds coarsened"
- make less subtle or refined;
"coarsen one's ideals"
例句
- The sea air coarsened her skin.海上的空气使她的皮肤粗糙了。