动词短语
中文翻译：在码头上自由地
同义词：
['free from', 'free of', 'unencumbered']
例句：
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1. The ship was free on the quay for the next two hours.
这艘船在接下来的两个小时里可以在码头上自由行驶。
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2. The fisherman is free on the quay to catch his own fish.
这位渔民可以在码头上自由地捕捞自己的鱼。
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3. The boat was free on the quay and could be used by anyone who wanted to use it.
这艘船可以在码头上自由使用，任何想要使用它的人都可以使用。