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1.The engineer used a locked spacer to ensure the bolts were securely fastened.
工程师使用了一个锁定间隔器来确保螺栓被牢固地固定。
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2. The locksmith replaced the old lock with a new one, using a locked spacer to prevent the old key from working.
锁匠用一个锁定间隔器替换了旧的锁，以防止旧钥匙起作用。
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3. During the installation process, the technician carefully placed the locked spacer between the door and the frame to ensureproper alignment.
在安装过程中，技术人员小心地把锁定间隔器放在门和框架之间，以确保正确的对齐。