单词	trench box
释义	trench box trench box, trench shield trench box A heavily braced box of wood or steel which can be moved along a trench bottom as excavation and pipe laying
随便看	boragewort boraginaceae boraginaceous boragineous borago borago officinalis borah, mount borah peak borah, william borah, william e. borah, william edgar borak bora, katharina von boral boralex power trust boralf boral limited boral material technologies, inc. boram boramep boramez boran boran craig barber engel construction co., inc. borane boranes

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