名词中文翻译
中文翻译：自由板标记
同义词：
['freeboard mark', 'freeboard notch', 'freeboard line']
例句：
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1. The boat's freeboard mark is visible from the helm.
船的浮力标记从舵手处可见。
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2.The pilot marked the freeboard mark on the chart.
飞行员在航海图上标出了浮力标记。
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3. The crew had to adjust their positions to avoid hitting the freeboard mark.
船员们不得不调整位置以避免撞到浮力标记。