形容词
中文翻译：困难的
同义词：
['terrible', 'difficult', 'tough', 'hard例句：1. The project was so difficult that only a few people could finish it.（这个项目太难了，只有少数人能完成。）']
例句：
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1. The project was so difficult that only a few people could finish it.
这个项目太难了，只有少数人能完成。
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2.The task is too difficult for me to handle at the moment.
这个任务对我来说太困难了，目前我无法处理。
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3.The difficulty of the problem made him feel frustrated.
这个问题的困难让他感到沮丧。