形容词
中文翻译：Unknown
同义词：
['vast', 'extensive', 'broad', 'extensive', 'extensive', 'extensive']
例句：
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1.The forest is extensive and covers an area of about 100 square kilometers.
这片森林面积广阔，大约有100平方公里。
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2. The company's extensive network of offices across the country provides excellent customer service.
该公司遍布全国的办事处提供了出色的客户服务。
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3. The extensive research has led to several important discoveries.
广泛的研究导致了几项重要的发现。