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。