Building a railway across the prairies to the pacific .

与建一条横越草原地区及太平洋海岸的铁路。

Have you to the prairies in north america ?

你去过北美洲的大草原灭？

We have made agricultural fields out of prairies and forests .

我们已经把草场和森林变为农田。

More than half of the monitored bird species that live on prairies have experienced population losses .

在北美草原上生活的被检测的鸟类，有一半以上已经经历了数目损失。

Grain inspector jim dolan inspects wheat from the canadian prairies at the pioneer grain elevator in carseland , alberta .

粮食检测员jimdolan正在检查阿尔伯达省卡斯兰的先锋粮仓中从加拿大草原来的小麦。