在西部拓荒时期，驿站马车是连接小镇之间的重要交通工具。

During the frontier days, ___stagecoaches were vital for transporting people between small towns.

在19世纪，驿站马车是穿越美国荒野的主要交通工具。

In the 19th century, ___stagecoaches were the primary means of transportation across the American wilderness.