Work on the production line is monotonous and lacks variety.在流水线上工作很单调,缺乏变化。The assembly line was a human machine.那条流水线是由人组成的作业体系。Were it not for this misfortune, he might never have been forced into the business of grinding out novels to support his family.要不是因为这一不幸变故,他可能永远都不会迫于无奈地开始流水线式创作小说养家糊口。