形容词
中文翻译：被频繁踩踏的
同义词：
['frequently used', 'well-used']
例句：
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1.The old library has been well-trodden by many generations.
这个老图书馆已经被许多代人频繁使用。
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2. The path to the top of the mountain was well-trodden by hikers.
通往山顶的路是徒步旅行者经常走的。
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3.The old books in the library are well-trodden, and it's hard to find a new one.
图书馆里的旧书都被翻得很多，很难找到新的。