coarsen

coarsen
verb
  1. make or become rough
    (使)变粗糙
    [with obj.]her hands were coarsened by outside work.
    在外工作使她双手变粗糙。
    [no obj.]his facial features appeared to coarsen with age.
    他的五官随年龄的增长越显粗糙。
    ■make or become crude, vulgar, or unpleasant
    (使)变粗鲁;(使)变粗俗;(使)变讨厌
    [no obj.]the voice coarsened.
    声音变得粗鲁了。
英语宝典
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