副词短语
中文翻译：就
同义词：
['to the best of my knowledge', 'tothe best of my ability', 'up toa certain point']
例句：
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1.As far as I know, he's been working here for three years.
据我所知，他在这里工作了三年。
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2. She wasable to finish the project as far asshe could.
她尽她所能完成了这个项目。
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3.The company has been operating as far asI can tell.
据我所知，这家公司一直在运营。