名词
中文翻译：Unknown
同义词：
['tack', 'hold', 'retain']
例句：
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1.The car was tacked down to the ground with a heavy chain.
这辆车用沉重的链条固定在地上。
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2. She retained her memory of the event vividly in her mind.
她生动地回忆了那次事件。
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3. The team retained their position in the league standings.
该队在联赛排名中保持了他们的席位。