cir·cum·nav·i·ga·tion
noun/ˌsɜːkəmˌnævɪˈɡeɪʃn/
/ˌsɜːrkəmˌnævɪˈɡeɪʃn/
[uncountable] (formal)- the act of sailing all the way around something, especially all the way around the world
环绕…航行；（尤指）环绕地球航行 - the circumnavigation of the globe
环球航行
- the circumnavigation of the globe