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Whistle post
01
哨子标志
a sign along a railway track that tells the train driver to blow the whistle
例子
Workers placed a new whistle post by the curve to increase safety for everyone.
The railway company checks each whistle post regularly to ensure they are visible and in good condition.
The train driver saw the whistle post and blew the whistle to warn people near the tracks.
Children playing near the railway track heard the whistle after the train passed the whistle post.
The old whistle post was faded, so it was hard for the train driver to see it.
