名词
中文翻译：长符号
同义词：
['Long Symbol', 'Long Line', 'Long Line Symbol']
例句：
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1. Thelong symbol on the roadside is a warning to drivers.
路边的长符号是警告驾驶员的。
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2. The long symbol in the middle of the road is used to indicate the direction of traffic flow.
路中间的长符号用来指示交通流向。
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3. The long symbol at the end of the line is used to indicate the end of the line.
线尾的长符号用来指示线的终点。