名词中文翻译
中文翻译：混凝土信号
同义词：
['concrete message', 'concrete indication', 'concrete indicator']
例句：
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1. The engineer used a concrete signal to guide the construction workers.
工程师使用一个混凝土信号来指导施工工人。
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2. The police officer received a concrete signal from his dispatcher.
警察接到了来自调度员的混凝土信号。
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3.The scientist observed a concrete signal in the data and analyzed its implications.
科学家在数据中观察到了一个混凝土信号，并分析了其含义。