同学你好，该知识点来自沪江网校《实用英语口语【生活美语随到随学班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学好，
能具体写下这句话在几分几秒吗，我来听一下。
a couple of sth, 一般是这样搭配使用，请看字典例句：
https://dictionary.cambridge.org/dictionary/english-chinese-simplified/couple

two or a few things that are similar or the same, or two or a few people who are in some way connected
（相似或相同事物的）一对，一双，几个；（有某种联系之人的）一对，几个
The doctor said my leg should be better in a couple of days.
医生说我的腿过两天就会好转。
A couple of people objected to the proposal, but the vast majority approved of it.
有几个人反对该提议，但绝大多数人赞同。

追问也是应该被回复的。 同学也可以重新发帖，附上之前问题的链接，重新发帖的回复更加迅速且所有助教都能看到。　

周末愉快！