coarsening
noun [ S or U ] uk/ˈkɔː.sən.ɪŋ/ us/ˈkɔːrː.sən.ɪŋ/
(ROUGHER)
粗化
the process of becoming rougher or making something rougher
Tanning is the single most ageing thing you can do to your skin, causing fine lines, skin coarsening, even dark circles. 日光美黑最能使皮肤老化，它会导致细纹、皮肤变粗，甚至黑眼圈。
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- The symptoms of hypothyroidism can include fatigue, cold intolerance, hair coarsening, and constipation.