名词
中文翻译：前进信号
同义词：
['advance signal', 'forward indication']
例句：
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1.The new system is designed to provide a forward signal for the driver.
新系统设计为为驾驶员提供前进信号。
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2. The radar system sends out forward signals to alert pilots of potential threats.
雷达系统发送前进信号以警告飞行员潜在的威胁。
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3. The forward signal from the satellite helped us locate the lost aircraft.
卫星发出的前进信号帮助我们找到了失事的飞机。