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1·Road crews also maintain the road by plowing regularly, since open ice freezes more solidly than snow-covered ice.

道路人员同时也定时地做这种工作，因为这样的冰层比雪覆盖的冰层要更牢固。

2·This water then freezes and thickens the ice road. Road crews also maintain the road by plowing regularly, since open ice freezes more solidly than snow-covered ice.

道路工人通过有规律的铲雪来维护路面，因为稀疏冰冻要比积雪冰冻更加坚固。

3·They found fossils of microscopic marine plants which suggest that the region was once open ocean, not solid ice.

他们发现了微型海洋植物的化石，表明该地区曾经是开放的海洋，而不是坚固的冰层。

4·Within samples collected from the solid substances lying beneath the ice they found fossils of microscopic marine plants which suggest that the region was once open ocean not solid ice.

在从冰下的固体物质中收集的样本中，他们发现微型海洋植物的化石，这表明这个区域曾经是开阔的海洋而不是坚硬的冰。

5·As waves break up ice the seas will become more open, and the waves will get even stronger.

随着海浪打破冰层，海洋将变得更加开阔，海浪将变得更加强劲。

6·As the Arctic ice pack spread southward, Norse voyages to the west were rerouted into the open Atlantic, then ended altogether.

由于北极的大片浮冰向南移动，挪威人的航行路线由向西航行改成了向开阔的大西洋航行，后来向西的航行整个都终止了。

7·The more you lose, the more open water is created, the more warming goes on in that open water during the summer, the less ice forms in the winter, the more melt there is the following summer.

冰减少的越多，形成的无冰水面就会越多，这些无冰水面在夏天时的温度会持续升高，在冬天结的冰就会减少，来年夏天也会有更多的冰融化。

8·If the temperature is below 0℃, water will turn into ice in the open air.

如果温度低于0摄氏度，水在室外就会结冰。

9·We left an audio message saying that we'd found a sea container locked in the ice - and that expedition member Martin was in the process of breaking it open.

我们留下一条音频信息，说我们在冰面上发现一个锁着的海运集装箱——探险队员马丁正在设法砸开集装箱。

10·Icebergs are large pieces of freshwater ice that break off snow-formed ice shelves or glaciers and float in open water.

冰山是由雪形成的冰架或冰川断裂而成，主要由淡水冰组成，一般漂浮在开阔海域。