名词
中文翻译：Unknown
同义词：
['downturn', 'hook', 'turn down']
例句：
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1.The ship's bow was pointing towards the shore.
船的船头指向岸边。
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2.The boat turned down the river to avoid the strong current.
小船向下游驶去避开急流。
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3.The captain turned down the radio to save battery power.
船长把收音机关小以节省电池电量。