动词
中文翻译：保持
同义词：
['maintain', 'preserve', 'sustain']
例句：
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1. We need to keep the peace between our neighbors.
我们需要保持我们邻居之间的和平。
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2. The team needs to keep up with the competition.
这个团队需要跟上竞争的步伐。
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3. She kept her promise to help me with my homework.
她遵守诺言，帮我完成了作业。