Running this behavior implies not only the United States, other countries trying to catch up posture in just 300 years of history in the United States also expressed the spirit of struggle
The act of running not only hints at the U.S.'s desperate pursuit of other countries in its 300-year history, but also the spirit of American struggle.
The act of running not only indicates that the United States is striving to catch up with other countries in a short history of 300 years, but also shows the spirit of American struggle<br>