同学你好，该知识点来自沪江网校《BEC商务英语初中高级【四项全能实战签约全额奖学金班】》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。

同学你好
这里的since作为副词，意思为“此后;后来”
I have since had a meeting with Sarah，the head of the Customer Services team此后，我与客户服务团队负责人莎拉进行了一次会面
since此用法的其他例子：
He left home two weeks ago and we haven't heard from him since.
他两周前离家外出，我们至今还没有他的音信。
The original building has long since (= long before now) been demolished.
原来的建筑老早就拆了。
We were divorced two years ago and she has since remarried.
我们两年前离了婚，之后她又再婚了。
祝学习愉快！