名词
中文翻译：哨子信标
同义词：
['whistle signal', 'whistle beacon例句：1. The police used a whistle post to alert the public of an emergency.（警方使用哨子信标来警告公众紧急情况。）2. The whistle post was placed at the entrance of the school to warn students about the danger.（学校入口处放置了哨子信标，以警告学生注意危险。）3. The whistle post is a crucial component in maintaining order and safety on a busy street.（哨子信标是维护繁忙街道秩序和安全的关键组成部分。）']
例句：
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1. The police used a whistle post to alert the public of an emergency.
警方使用哨子信标来警告公众紧急情况。
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2. The whistle post was placed at the entrance of the school to warn students about the danger.
学校入口处放置了哨子信标，以警告学生注意危险。
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3. The whistle post is a crucial component in maintaining order and safety on a busy street.
哨子信标是维护繁忙街道秩序和安全的关键组成部分。