when setting budgets it is a good i

when setting budgets it is a good idea to make contingency plans. What are contingency plans and why are they necessary?

Results (Chinese) 1:

设置预算时它是一个好主意，使应急计划。应急计划是什么，为什么他们有必要吗？

Results (Chinese) 2:

设置预算时，这是一个好主意，做好应急预案。什么是应急计划，他们为什么有必要吗？