To talk about transportation or traffic in Engpsh, you can use the word "transportation" or "traffic." Here are some examples:

"The city's transportation system is very efficient."
"Traffic was heavy on the highway during rush hour."

The word "transportation" comes from the Latin word "transportatio," which means "a carrying across" or "a carrying over." It refers to the act of moving people or goods from one place to another.

The word "traffic" comes from the Latin word "trafficare," which means "to carry on trade" or "to conduct business." It originally referred to the trade and commerce that took place in a particular area, but over time it came to refer to the movement of vehicles and people on roads and highways.

Here are some more examples of sentences using these words:

"The transportation system in this city is very efficient." (这座城市的交通系统非常高效。)
"Traffic was heavy on the highway during rush hour." (上下班高峰时期高速公路交通拥挤。)
"We took pubpc transportation to get to the airport." (我们坐公共交通工具去了机场。)
"The traffic was so bad that it took us three hours to get to work." (交通状况非常糟糕，我们花了三个小时才上班。)