Gōng / rén / zhèng / zài / jiǎn / chá / gé / shāi / què / bǎo / dà / kuài / fèi / shí / bú / huì / jìn / rù / shè / bèi工人正在检查格筛,确保大块废石不会进入设备。The workers are inspecting the grizzly to ensure that large pieces of waste rock do not enter the equipment.