名词
中文翻译：Unknown
同义词：
['hard', 'difficult', 'troublesome']
例句：
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1.He was so astonished by the news that he couldn't speak for a moment.
他对于这个消息感到震惊，一时说不出话来。
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2. The task of completing this project is quite asper.
完成这个项目的任务相当艰巨。
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3. She had to endure many aspers in her life.
她一生中不得不忍受许多困难。