名词
中文翻译：脱轨防护装置
同义词：
['tracking device', 'rail guard', 'track guard例句：1. The derailment guard is designed to prevent trains from derailing.（脱轨防护装置旨在防止火车脱轨。）']
例句：
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1. The derailment guard is designed to prevent trains from derailing.
脱轨防护装置旨在防止火车脱轨。
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2. The engineer inspected the derailment guard before starting the engine.
工程师在启动引擎前检查了脱轨防护装置。
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3. The train was equipped with a sophisticated derailment guard system.
这列火车配备了一个复杂的脱轨防护系统。