动词短语
中文翻译：使变平
同义词：
['reduce', 'level', 'lower']
例句：
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1.The team's performance has ground down our hopes for the win.
团队的表现已经让我们对胜利的希望变得渺茫。
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2.The economy is grounding down because of the recession.
由于经济衰退，经济正在放缓。
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3.The company's stock price has grounded down significantly since the announcement.
自从宣布以来，公司的股价已经显著下跌。