a couple hours

a couple hours 是几个小时的意思,是固定搭配给你几个例句参考一下：1,It''ll just be a couple hours。（只需要几个小时）2,Just a couple hours,that''s it。（几个小时就够了）3,Dolphins generally sleep at night,but only for a couple hours at a time。海豚一般在晚上睡觉,但是每次只有两三个小时。4,"Just a couple hours now," said Dad,"and we'll soon be at our campsite!"“现在还剩下两三个小时了,”爸爸说,“我就很快就能到达露营的地方!”ps：同样,a couple of hours 也是几个小时,一些小时,都可以用的