Master class: this class is to set up twice a year: January, February, winter summer school in June and July.
大师班：本班每年兴办两次：冬天班一月、二月，暑期班六月、七月。
Even in summer this place did not look exactly hospitable: in winter, conditions must have been exceedingly harsh.
即使在夏天，这个地方看上去也并不太宜人：在冬天，条件一定非常恶劣。
Summer hours were long, winter ones short; only at the spring and autumn equinoxes were the hours of daylight and darkness equal.
夏天的时间长，冬天的时间短；只有在春秋分点，白天和黑夜的时间才相等。
The Tree did not rejoice at all; he grew and grew, and was green both winter and summer.
枞树一点也不高兴；他越长越大，冬天和夏天都是绿色的。
Heidi never knew if it was summer or winter, for the walls opposite never changed.
海蒂不知道现在是夏天还是冬天，因为对面的墙从未变过。
The white ones are white in winter, but gray-brown in summer.
这些白色的在冬天是白色的，但是在夏天是灰棕色的。
Karry said, "in a particular season I will think of you, such as spring, summer, autumn and winter."
卡里说：“在特定的季节我就会想你，比如春天、夏天、秋天和冬天。”
We are close to a knowledge of annual summer and winter temperature variations over much of the northern hemisphere going back 600 years.
我们很快就会知道，600年前北半球大部分地区每年夏季和冬季的温度是如何变化的。
In the Southern hemisphere winter has begun, and it is summer north of the equator.
在南半球，冬天已经开始，赤道以北是夏天。
But inside, special windows cut power bills by blocking solar heat in summer and retaining indoor warmth in winter.
但是在室内，特殊的窗户通过在夏天阻挡太阳的热量和在冬天保持室内温暖来减少电费。
With the advent of the five-year-plans, millions of women also began to toil in factories and in heavy construction, building dams, roads and steel mills in summer heat and winter frost.
随着“五年计划”的到来，数以百万计的妇女也开始在工厂和大型建筑工地、大坝、道路和钢铁厂中苦干，经受着夏天的酷热和冬天的严寒。
In other words, its coat, its fur, turns from brown in the summer to white in the winter, which makes it harder for the hare's predators to see it against the white snow.
换句话说，它的毛色从夏天的灰色变成了冬天的白色，这使得捕食者很难从雪地里找到它。
It is never very hot in summer or very cold in winter.
夏天向来不太热，冬天也不太冷。
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。
Rain falls in summer; snow falls in winter.
夏天下雨，冬天下雪。
The temperature increase has occurred during the winter and spring, not during the summer.
气温上升发生在冬季和春季，而不是夏季。
Jo is a fifteen-year-old girl. She is average at her high school work and she is involved in school tennis in summer and netball in winter.
乔是个15岁的姑娘，中学的学习成绩一般，她参加了学校夏季网球和冬季的无板篮球活动。
Because of the cold temperatures, the tundra has two layers: top layer, which is called the active layer, is frozen in the winter and spring, but thaws in the summer.
由于寒冷的气温，冻土带有两层：最上面的一层被称为活动层，在冬季和春季被冻结，但在夏季解冻。
After lunch, they drove to their summer villa, in order to make arrangements there for winter, and I went with them.
吃过午饭后，他们驾车去他们的夏季别墅，为去那儿过冬做安排，我跟他们一起去了。
These birds migrate to Europe in the summer season, returning to warmer places in the south for the winter.
这些鸟夏季移栖到欧洲，冬季回到南方温暖的地方。
It may be biological processes that occur in the soil in the winter, that cause increased shrub growth in the summer, and here's how: there are "microbes", microscopic organisms that live in the soil.
可能是冬季土壤中发生的生物过程，导致夏季灌木生长增加，原因如下：有“微生物”，即生活在土壤中的微生物。
In the summer, Andrew plays tennis or golf almost every day and in the winter he goes skiing every chance he gets.
夏天，安德鲁几乎每天都打网球或高尔夫球，冬天他一有机会就去滑雪。
If the winter is not cold enough to freeze the ground, you can grow carrots the same way as you do during the summer months.
如果冬天还没有冷到让土地结冰的地步，你可以像夏天那样种植胡萝卜。
I wonder if I shall take root here, and winter and summer stand covered with ornaments!
我也许会在这里扎下根来，冬夏都将被这样装饰！
Annapolis' working-class watermen brought in crabs in the summer and scraped the paint off wooden vessels in the winter.
安纳波利斯工人阶级夏天运来螃蟹，冬天刮掉木船上的油漆。
I mean a very long vacation, for example, winter vacation, summer vacation.
我是说很长的假期，比如说，寒假，暑假。
You have learned about winter and summer.
你已经了解了冬季和夏季。
Spring comes between winter and summer and autumn comes after summer but before winter.
春天在冬天和夏天之间，秋天在夏天之后冬天之前。
One comes after winter and before summer.
一个在冬天之后、夏天之前。
Winter and summer happen because the earth is tilted as it revolves around the sun.
冬天和夏天的出现是因为地球绕太阳公转时是倾斜的。
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