Dropping by

to pay an informal visit to a person or a place 顺便访问；顺便进入
Drop by sometime.
有空儿来坐坐。
I thought I’d drop in on you while I was passing.
我曾想路过时顺便来看看你。
Sorry we’re late—we dropped into the pub on the way.
对不起，我们迟到了。我们半路上顺便到酒馆坐了坐。