The ski resort is an ideal place for skiing and ice-skating because of its well-constructed ski tracks, comprehensive winter sports training facilities and breathtaking environment.
长白山滑雪场是滑雪、滑冰爱好者的理想运动场所，因为这里有设计精良的雪道，齐全的冬季运动训练设施以及惊险壮观的自然环境。
The Moon's brightness varies throughout its annual cycle, during the mid-winter in the northern hemisphere it can appear brighter simply because it is higher in the sky.
月球的亮度随着轨道位置的变化而变化，在北半球的深冬，月亮会更亮，因为它在天空中更高。
Many property owners choose thatch not only for its beauty but because they know it will keep them cool in summer and warm in winter.
许多业主选择茅草屋顶不仅因为它的美丽，还因为他们知道它将让他们在夏季保持凉爽和在冬季保持温暖。
This is because of the highly reflective nature of snow combined with its large surface coverage (snow can cover up to 40% of the Earth's land surface during the Northern Hemisphere winter).
这是因为大面积雪盖的高反射特性（北半球的冬季，雪可覆盖到40％的陆地表面）。
Because the sun is our source of light, energy and heat, the changing intensity and concentration of its rays give rise to the seasons of winter, spring, summer and fall.
因为太阳是光，能量和热的源头，太阳光照强度和密度的变化带来了春夏秋冬季节的改变。
And remember to wear sunscreen during the winter because that you don't feel the sun's rays doesn't mean its harmful UVA and UVB rays are not penetrating your skin.
此外，在冬天也要记得涂防晒霜。因为你感觉不到阳光，并不意味着有害的紫外线a和紫外线B不会渗透到你的皮肤中。
You can always remember its name because most colds arrive with cold weather. That is because, during the winter, people stay inside more and breathe the same air, sharing their germs.
你也总是能记得它的名字，因为大部分感冒是伴随着冷空气而发生的。
It is also called the Oriental fog City because of its frequent foggy weather in autumn and winter caused by the humid subtropical monsoon climate.
又因其亚热带季风性湿润气候，秋冬多雾，亦称“东方雾都”。
The water of the Baltic is not very salty because many fresh rivers flow into it, so it freezes more easily. Many of its ports are blocked by ice in winter.
另外一个原因是有不少淡水河流入波罗的海，造成该海的含盐度较低，冬季容易结冰。
The water of the Baltic is not very salty because many fresh rivers flow into it, so it freezes more easily. Many of its ports are blocked by ice in winter.
另外一个原因是有不少淡水河流入波罗的海，造成该海的含盐度较低，冬季容易结冰。
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