1.Andrew traversed the prairie on horseback.

1.安德鲁骑马草原。

2.A single sparkcan start a prairie fire.

2.星星之火, 可以燎原。

3.The best-known example is the compass plant of the prairies (Silphium laciniatum).

3.最著名的例是草原上的指向植物（罗盘草）。

4.Any of various game birds in the family Tetraonidae (order Galliformes), including the prairie chicken and ptarmigan, or the sandgrouse (order Columbiformes).

4.形科的几种猎鸟。包括草原、雷鸟和沙（鸠鸽）。