roofway
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大火从电梯通道里开始，然后蔓延到了屋顶。
The fire began in a lift shaft and spread to the roof.
《柯林斯英汉双解大词典》
他走了几步，然后向上爬到上一层的通道，然后不断向上直到看到屋顶的入口。
He walks a few steps, and then pushes his way up to the catwalk above him. He keeps climbing until he sees the roof access.
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设置脚手架，以提供通往屋顶的安全通道。
Set up scaffolding to provide safe access to roofs.
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