帮忙翻译成英文 “此问题一直存在，以前的措施主要是合理布局生产线减少员工犯错”

This problem has always existed, the major measures arereasonable layout of a production line to reduce the staff.

This problem has always existed, the measures used in past were
primarily a reasonable design of production lines to minimize the
mistakes of the workers.

The problem always remains and the previous solution was appropriate layout of production line to reduce error of the employees.

This problem has always existed, previous measures are mainly rational distribution of production lines to reduce employee mistakes.