| 1. | To our right rose the high rampart of the dunes .
我们的右边是高耸的沙丘。 |
| 2. | At some higher velocity the ripples or dunes disappear and the bed becomes flat .
流速增大时，沙纹、沙垄消失，河床变平。 |
| 3. | There was little loose sand, and most of it had formed into low dunes .
那里很少有松散的沙子，它们绝大多数已经形成矮小的沙丘。 |
| 4. | In the upper reach the bed was dune covered and in the lower reach it was flat .
上游河段的床面为沙垄所覆盖，而下游河段则为平整床面。 |
| 5. | It possessed every outcropping of rock, every curve of sand dune on a barren and gelid shore .
这里也有凛冽荒凉的海边那种礁岩嶙峋，沙丘起伏的景色。 |
| 6. | The presence of dunes or antidunes in streams alternately decreases and increases the local depth .
河流中沙垄和逆行沙垄的存在，使局部水深交替地增大或减小。 |
| 7. | Their fictional world has been replaced by a fantastic real one of trackless dunes and icy crags .
他们那虚构的世界，已为荒芜的沙丘和酷寒的皑崖这一奇异的真实境界所替代。 |
| 8. | The hovercraft travelled first over the water , then mounted the beach , climbed up the dunes , and sat down on a road .
气垫船先在水面之上行驶，然后登上河滩，爬上沙丘，而后停在路上。 |
| 9. | For some sediments and flow the flat bed does not occur and the bed form goes directly from dunes to antidunes .
对某些泥沙和水流，平整床面并不发生，而床面形状则直接从沙垄转为逆行沙垄。 |
| 10. | The hard shell of giant dune worms . adds + 10 armor
巨沙虫的坚硬外壳。增加10点装甲。 |
