MEANING/意义
信号
EXAMPLES/列句
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今天信号很好。Today the signal is very good.
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手机信号不好,我听不清楚。The cell phone signal is bad, (so) I can't hear clearly.
COMBINATIONS/组合
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信号弹signal bullet,signal flare
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发信号send a signal
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信号设备signal equipment
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臂板信号(on railways) semaphore signal
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灯光信号light signal
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求救信号distress signal
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微弱信号feeble signal
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信号放大器signal amplifier