on a tour of

on a tour of 漫游,巡回,周游某地
He went on a speaking tour of the United States
他去美国作巡回演讲.
We hired a driver to take us on a tour of the city
我们雇用了一个司机带我们游览这个城市.
He compiled enough information on his tour of South American capitals to write a book
他在南美各国首都旅游时收集了不少资料,足够写本书.
The children on the study tour have to keep a diary of the place they visit
参加修学旅游的孩子们必须将所到之处写入日记.