极地涡旋是冬季风形成的一个风系。
在沙特阿拉伯的冬季期间内沙暴很常见。
我参加了冬季奥运会，那是我的告别比赛。
冬季时大群大群的海鸥会聚集在垃圾场和排污口。
During the winter months, great flocks of gulls gather at landfills and sewage outfalls.
蛹在土壤下休眠，直到冬季才变为成年的蛾飞出来。
The pupae remain dormant in the soil until they emerge as adult moths in the winter.
冬季白天较短。
这些鸟夏季移栖到欧洲，冬季回到南方温暖的地方。
These birds migrate to Europe in the summer season, returning to warmer places in the south for the winter.
低矮生长形态也能让植物利用冬季积雪提供的隔离环境。
The low growth form can also permit the plants to take advantage of the insulation provided by a winter snow cover.
但这并没有阻止成千上万的冬季抑郁症患者试图治疗自己。
That hasn't stopped thousands of winter depressives from trying to heal themselves.
独角鲸测量确实与一次冬季直升机调查得到的样本相当一致。
The narwhal measurements do correlate well with one-shot samples taken by winter helicopter surveys.
在冬季，潮湿地区可以提供一种优良的、蒲草和芦苇形式的绝缘材料。
During the winter, wet areas may provide an excellent insulating material in the form of cattail fluff and reeds.
在北美西部的广大地区，日益温暖的冬季正导致树皮甲虫的大规模爆发。
Across vast areas of western North America, increasingly mild winters are causing massive outbreaks of bark beetle.
它们将这些垃圾场作为冬季的进食地点，而非飞行数千英里去寻找食物。
Instead of flying thousands of miles in search of food, they make the waste sites their winter feeding grounds.
在2018年冬季奥运会闭幕式上，北京将呈现一场精彩的8分钟表演。
A splendid eight-minute show on Beijing will be staged at the closing ceremony of the 2018 Winter Olympics.
水培法的应用范围超出了基础研究，因为它有助于冬季温室蔬菜的生长。
Hydroponics has applications beyond basic research since it facilitates the growth of greenhouse vegetables during winter.
在冬季，投食活动是最令人类满意的，对鸟类来说这项活动也是最有益处的。
In winter feeding efforts are most satisfying to people and are of greatest benefit to birds.
我知道我们曾在冬季远足的时候到处找这些野兔，但在雪里面根本找不到它们。
I know we used to try to look for those hares when we went hiking in the winter, but it was often hard to find them in the snow.
你有没有停下来想一想，在制作你冬季穿的那件毛衫的过程中，涉及到了多少个人？
Have you ever stopped to think of the many people who have been involved in producing that pullover you wear in winter?
这是一种简单的适应方式，能确保它们在冬季过后发芽，而不是在此之前就早早发芽。
This is a simple adaptation to ensure that germination occurs following the winter conditions rather than immediately prior to their onset.
亨利克先生属于爱留胡子一类的家伙，但他的习惯是冬季蓄起胡子，到了春季又刮光。
Mr. Henrich liked to grow out his mustache and beard during the winter and shave it off later in the spring.
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。
We are close to a knowledge of annual summer and winter temperature variations over much of the northern hemisphere going back 600 years.
1891年冬季的一天，美国马萨诸塞州一所培训学校的一个班走进体育馆进行日常训炼。
One winter day in 1891, a class at a training school in Massachusetts, U.S.A, went into the gym for their daily exercises.
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。
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.
其他记忆食物含有大量的omega-3脂肪酸，包括亚麻籽、核桃、鲑鱼、大豆和冬季瓜。
Other memory foods that contain high amounts of omega-3 fatty acids include flaxseed, walnut, salmon, soybean and winter squash.
候鸟会影响老家和冬季目的地两者的生态系统，而扰乱传统路线可能会产生意想不到的副作用。
Migrating birds affect ecosystems both at home and at their winter destinations, and disrupting the traditional routes could have unexpected side effects.
因此，虽然冬季海冰覆盖面积可能减少，但表层水将足够冰冷，因此海冰覆盖面积不会减少太多。
Thus, although the winter sea-ice cover might decrease, the surface waters would remain cold enough so that the decrease would not be excessive.
多年的春季和初夏大雨，温和的冬季，频繁的大西洋风暴，或干旱时期，轻微的东北风，和夏季热浪。
Years of heavy spring and early summer rains, mild winters, and frequent Atlantic storms, or to periods of droughts, light northeasterly winds, and summer heat waves.
为了1992年冬季奥运会，法国组织者在阿尔卑斯山建造了一条新的高速公路、停车场和滑雪跑道。
For the 1992 Winter Games, French organizers constructed a new motorway, parking lots and runs for skiing in the Alps.
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。
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.
如果更温暖的夏季和更温和的冬季促使捕食蜜蜂的亚洲大黄蜂的散布，它们可能很快就会面临进一步的威胁。
They could soon face a further threat if warmer summers and milder winters encourage the spread of the Asian hornet, which preys on bees.
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