动词
中文翻译：保持
同义词：
['maintain', 'preserve', 'sustain']
例句：
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1. The team is keeping aclose eye on the game's progress.
球队正在密切关注比赛的进展。
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2. We needto keep our promises and not let themdown.
我们需要兑现承诺，不能让他们失望。
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3.The scientist kept his findings secret until theresults were published.
科学家将他的发现保密，直到结果公布。