an open field

• 空旷的田野

an open field的用法和样例：

例句

1. The Missouri River and its tributaries have cut deep paths through underlying sandstone and shale, fracturing the open country.
   密苏里河及其支流的道道深壑穿过地下的砂岩和页岩，使这个空旷的田野断裂。