副词
中文翻译：艰难地
同义词：
['hardly', 'barely', 'laboriously']
例句：
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1.He arduously worked on the project for several hours without a break.
他艰难地工作了几个小时，没有休息。
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2. The climb was arduously difficult, but she persevered.
攀登非常困难，但她坚持下来了。
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3. They arduously built the house from scratch.
他们费力地从零开始建造了这所房子。