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1. The belt guide is a useful tool for navigating through the city's crowded streets.
腰带指南是一个有用的工具，可以帮助你在城市的拥挤街道上导航。
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2. The new belt guide system has made navigation much easier for travelers.
新的腰带指南系统使旅行者的导航变得更容易。
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3. The belt guide was designed to help people find their way around the city center.
腰带指南是为了帮助人们找到市中心的路线而设计的。