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It is important for us to study hard.
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important
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~ (to sb) having a great effect on people or things; of great value
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I have an important announcement to make.
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study
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~ (sth) (atâ¦) | ~ (for sth) to spend time learning about a subject by reading, going to college, etc.
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My brother studied at the Royal College of Art.
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hard
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with great effort; with difficulty
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to work hard
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it为形å¼ä¸»è¯ï¼çæ£ç主è¯æ¯åé¢çå¨è¯ä¸å®å¼to study hardï¼
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