“一段时间”应该说“a few time”还是“a long time”?为什么?

“一段时间”应该说“a few time”还是“a long time”?为什么? last for a long time 还是last a long time? 应该是take a long time 还是take long time just a few time so long a time为什么加a, a long time中的time是次数还是时间 a long time 区别 long time long time和a long time区别? A long time 请求, A long time ago a long lonely time a long time