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1·Soon the northern lands will be locked in the cold of the polar night.

很快北国疆土就会被极夜的寒冷所吞没。

2·An instant, suspended in the night... only clear during winter solstice in the heart of a polar night.

这促发的瞬间……只显现于冬至的极夜时分。

3·This difference allows the satellite to capture a year-round sea ice record, despite cloud cover and months of polar night.

这种差别使得卫星能够获取整年的海冰记录，除非出现云层遮蔽或极夜的月份。

4·Polar mesospheric, or noctilucent (night shining), clouds usually are seen at twilight, following the setting of the sun below the horizon and darkening of Earth's surface.

极地气层云，或者说晚霞，通常是那些在黎明前看到的云朵，伴随着地平线以下落幕的太阳和黑暗的地球表面。

5·Polar mesospheric clouds are also known as noctilucent or “night-shining” clouds—a property that is clearly visible in this astronaut photograph.

极地中层云也被称为夜光云层（noctilucent）（就是在夜晚还闪光的云）。 这一特点在这张太空照片上显露无疑。

6·The Polar Bear returned every night that week to play with the dogs...

那个星期，北极熊每天晚上都来和狗狗们玩。

7·I go to the night zoo in Panyu with my mother and father. we see the white tigers, the bears, lions, elephants, pandas, polar bears and the snakes.

我去番禺的夜间动物园和我的母亲和父亲。我们看到白色的老虎，熊，狮子，大象，熊猫，北极熊和蛇。

8·The electron density is much lower at night in the polar cap areas.

夜间进入极盖区后，电子密度则很低。