动词短语
中文翻译：长放
同义词：
['keep', 'hold', 'maintain', 'preserve', 'sustain']
例句：
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1. The old painting was long put in a dusty corner of the room.
那幅旧画被长时间放在房间一个灰尘满布的角落里。
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2. We need to keep the garden well-maintained to ensure its long-term growth.
我们需要好好维护花园，以确保其长期生长。
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3. The company has been sustaining operations for over a decade now.
这家公司已经持续运营了十多年。