1·Flat plains suggest possible volcanic activity.
平原建议可能的火山活动。
2·Further south, there are flat plains where wheat and maize are grown. Much of east U.
再往南是平坦的平原，那儿生长小麦和玉米。
3·Horseshoe shaped lakes or oxbow lakes are not unusual in the flat plains of the lower Mississippi river and deltas of other rivers.
马蹄形湖泊或牛轭湖也是常有的密西西比河下游的平原和河流三角洲的其他。
4·On the flat plains where the craft had landed, however, the rover found neither lake deposits nor other preserved signs that water had once flowed inside Gusev.
然而在太空船著陆的平坦平原上，精神号既没有发现湖泊的沉积，也没有发现其他迹象显示卡西佛陨石坑内曾经有水。
5·I usually live on flat, open plains. But I also can live up in the mountains of South Africa.
我通常住在平坦、空旷的草原上，但我也能住在南非的山上。
6·The vast expanse of the United States of America stretches from the heavily industrialized, metropolitan Atlantic seaboard across the rich flat farms of the central plains.
美利坚合众国的辽阔地域，从高度工业化、遍布大都市的大西洋沿岸，延伸至中部平原肥沃平坦的农场。
7·Located along Buffalo bayou in Houston, the Arboretum lies within the Gulf Coastal Plains ecoregion, supporting vast flat prairies that abut wooded ravines associated with bayous and depressions.
沿着休斯顿水牛河的植物园位于墨西哥湾沿海平原生态区范围内，支持着抵靠着峡谷的广袤平坦的大草原，峡谷里树木繁茂并且充满了沼泽和洼地。
8·The United States is a varied land—of forests, deserts, mountains, high flat lands and fertile plains.
美国是一个地形多样的国家—有森林、沙漠、山脉、平坦的高原和肥沃的平原。
9·On a topographic map of the United States, the mountains look like jagged masses, the plains like vast open flat spaces, and the rivers like meandering threads.
从美国地形图上看，大山好像参差的土堆，平原像开阔平坦的空地，河流像蜿蜒的细线。
10·There are also plains where the ground is quite flat.
也有表面和平整的平原地区。