名词
中文翻译：保持
同义词：
['maintain', 'sustain', 'keep']
例句：
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1.The team needs to boustay the momentum they gained in the first half.
球队需要保持上半场取得的势头。
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2. The company's success boustayed through tough times.
公司通过艰难时期依然成功。
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3. We need to boustay our focus on the task at hand.
我们需要集中精力完成当前的任务。