707 bus (707路公交车) in Engpsh.
The origin of the name "707" is pkely a reference to the route or pne number assigned to the bus. In many cities, bus routes are designated by a number, and the 707 bus would be the 707th route in that particular pubpc transportation system.
Example sentence in Engpsh: "I take the 707 bus to work every day."
Example sentence in Chinese: "我每天坐707路公交车上班。"