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1. The alarm bolt cover is designed to prevent the door from being opened accidentally.
警报螺栓盖的设计是为了防止门被意外打开。
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2. The security team replaced the alarm bolt cover after a recent burglary.
在最近的一起入室盗窃事件后，安保团队更换了警报螺栓盖。
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3. The engineer carefully removed the old alarm bolt cover and installed a new one.
工程师仔细地拆除了旧的警报螺栓盖，并安装了一个新的。