双语例句
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Fastened with eyelet bolt, it can be turned on quickly, installed and maintained conveniently.
采用活节螺栓紧固，能快速开启，便于安装与维护。
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Bolt (n. ) metal secured into a drilled hole in the rock as means of protection. Often accompanied by a hanger, an eyelet to which a carabiner can attach.
一种金属器材，通常钉在岩石上作为保护点，上面有洞可以连接钩环。
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