名词
中文翻译：硬化的
同义词：
['hardened', 'hardened例句：1. The paint on the walls has styrenated over time.（墙上的油漆已经变硬了。）']
例句：
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1. The paint on the walls has styrenated over time.
墙上的油漆已经变硬了。
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2.The metal has been styrenated to make it stronger.
金属已经被硬化以提高其强度。
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3.The ground was styrenated by the heavy rain.
大雨使地面变硬了。