coarsens
v.
（使）变粗糙( coarsen的第三人称单数 );
例句:
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Skin thickens, dries and coarsens after sun exposure.
晒后皮肤会变厚、变干、变粗糙。
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Male expert drags right auditive Dan Jianyu Zhu coarsens instantly.
男又拿手拽右耳朵但见玉麈立即变粗.
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Expert drags right auditive Dan Jianyu Zhu coarsens instantly.
拿手拽右耳朵但见玉麈立即变粗.
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"In a sad bid to be trendy, the BBC coarsens countless lives".
来自BBC