名词
中文翻译：Unknown
同义词：
['bottom grip', 'bottom hold']
例句：
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1.The car's bottom traction is crucial for its performance.
汽车的底部牵引力对于其性能至关重要。
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2. The boat's bottom traction was tested to ensure stability during the race.
船只的底部牵引力在比赛中被测试以确保稳定性。
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3. The engineer used a special tool to improve the vehicle's bottom traction.
工程师使用一种特殊的工具来提高车辆的底部牵引力。