名词
中文翻译：Unknown
同义词：
['roughener', 'abrade', 'harden']
例句：
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1. The gardener uses an adulterator to remove weeds from thelawn.
园丁使用除草剂来从草坪上去除杂草。
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2. Thepaint needs to be abraded with sandpaper beforeit can be applied.
油漆需要先用砂纸打磨后才能涂抹。
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3. The oldwooden door was hardened by years ofuse.
旧木门因年久失修而变得坚硬。