Sometimes they keep you on a bit longer if there's no one quite ready to step into your shoes.有时如果没有顶替你的合适人选，他们会继续雇用你一段时间。The truth of the matter is we can't afford to keep all the staff on.事实是我们没有能力继续雇用所有员工。We cannot guarantee that we will be able to keep you on at the end of your contract.我们不能保证你的合同期满后能继续雇用你。