因此，他们的第一个日历系统被自然地分为三个季节，每个季节都是根据河流的变化而划分：淹没期、下沉期和丰水期。
So, naturally, their first calendar was divided up into three seasons, each based on the river's changes: inundation, subsidence and harvest.
春天是我们学习新的生活节奏的季节，许多人在自然界中找到舒适感。
In the spring, a season when we are learning new rhythms of life, many of us find comfort in the natural world.
一开始，人类把世界上的自然力量，甚至季节的变化都看成是不可预料的。他们试图通过各种方式去控制这些未知的，令人恐惧的力量。
In the beginning, human beings viewed the natural forces of the world - even the seasonal changes - as unpredictable, and they sought through various means to control these unknown and feared powers.
那些被科学家们熟知且被称为悬浮微粒的大多数粒子，会随着季节、自然事件以及人类活动的变化而自然的变动。
The amount of particles, known to scientists as aerosols, fluctuates naturally with the seasons and natural events, as well as with human activities.
随着季节的变化和白天的变短，非常是时候回顾下我们所喜爱的一些美丽的自然图片，还有去看看那些新的图片。
So as the seasons change and the days grow shorter, it's a good time not only to look back at some of our favorite images of this natural phenomenon, but check out some new pictures, too.
举个例子，恩斯特·哈斯关于天空、自然力和季节图片非常引人注目。
Take, for example, Ernst Haas's images of dramatic skies, the elements and the seasons.
秋高气爽、凉风习习、残阳如血，秋天是一年中最适合去户外走走，感受大自然的五彩缤纷的季节。
The cold breeze, crisp air, and the wonderful sunshine is what makes autumn the perfect time of the year for taking a hike outdoors, enjoying every inch of nature changing its colors.
这样的布置，能让人适时静下来心，品味季节的美好，感受自然的馈赠。
It's a wonderful opportunity to celebrate the season and enjoy the gifts of nature.
至少50万只蝙蝠被消灭，而这也使得农村少了春夏季节时的自然杀虫剂。
At least half a million bats have died, depriving the country-particularly in the spring and summer months-of a natural pesticide.
日本人崇敬树木和季节，这显示了他们对自然地热爱。他们同样也了解自然的可怕之处并对其报以敬畏之心。
Japan, which shows its love of nature in its reverence for trees and seasons, also knows the awesome power of the physical world-and fears it.
一些季节性小河流留下了有自然粘土的河床。
Small seasonal rivers formed beds of natural clays and dried mud.
大自然在这个季节，特别显得纯洁，这是使我们觉得最为高兴的。
The wonderful purity of nature at this season is a most pleasing fact.
这使得人类和他们称之为大自然的象征（季节更替的讯息，在过去人们通过这些讯息确认自己的年龄）渐渐疏离了。
The effect has been to veil man from what he calls natural symbols—the seasonal pattern of growth—that in the past reminded men of their own finiteness.
我创造出的形式被能够暗示时间段和季节变换的自然界的基本元素（风与空气）改变而获得了意义。
The forms I have created have altered and acquiered meaning through elementary nature (light and air) that give indications of the passage of time and changing of the seasons.
在自然光或者明亮的人造光源下受照射已被证实是一种有效的治疗季节性情感抑郁症方法。
Exposure to natural light or a bright artificial lightsource has been shown to be as effective as medication in treating somepeople with seasonal affective disorder.
他出生的时候，一颗明亮的星星照亮了整个夜空，季节自然而然地从冬天转入了春天，并且天空中出现了彩虹。
At the moment of his birth, a bright star lit up the sky, the seasons spontaneously changed from winter to spring, and rainbows appeared.
而在我们这个残酷的，充满刺激的现代世界里，我们必须无视所处的季节或是我们的身体传达给我们的自然界讯息，永远生产，优化和坚持下去。
In our relentlessly stimulating world we must produce, improve and carry on regardless of season or the natural signals that our bodies might otherwise give us.
秋季自然而然成为一年中我最喜欢的季节。
季节性情绪紊乱症(SAD)，以冬季缺乏自然光，抑郁症发作为特色的。
Seasonal affective disorder (SAD), which is characterized by the onset of a depressive illness during the winter months, when there is less natural sunlight.
在四月初的这个季节，选择在自然冰面上滑冰算是比较迟了，所以这是我们旅行的最后一站。
Tour skating on natural ice on the first of April is considered late in the season, so this was our last trip.
其实，人事的变更如季节的更替一样简单、自然，总有些不可抗拒的力量，让人离开、舍弃，叫人无可奈何却不得不面向前方。
In fact, the personnel, such as the seasons change as simple and natural, there is always an irresistible force, people leave, abandon, as people do nothing but have to face the front.
是呀在这季节落叶是自然现象，谁又管它这一片无足轻重的叶子呢！
Yeah, this season is a natural phenomenon leaves, who CARES that a marginal leaf too!
在这里能感到自然随季节而发生的变化，让孩子们明白一年四季多变的情况。
The change of the nature they can feel by season teaches children variable facts throughout a year.
我喜欢大自然，也喜欢每年的四个季节。
从季节的更替到每个月亮圆缺变化的周期，这些大自然的节奏塑造了他们对事情的看法。
The rhythm of nature-from the passing of the seasons to the monthly cycle of the moon-shapes their view of events.
大自然不会让它们拥挤在同一个季节里。
场地的巨大吸引力在于邻近水域，还有在季节变化中体验自然环境。
The great attraction of this location lies in the vicinity of water and in the experience of this natural environment through the changing seasons.
在自然界中，颜色的变化可以是一个新季节开始的信号，或者提供了一个警告远离海湾食肉动物的信号。
In nature, color changes can signal the onset of a new season, or offer a warning sign to keep predators at bay.
在自然界中，颜色的变化可以是一个新季节开始的信号，或者提供了一个警告远离海湾食肉动物的信号。
In nature, color changes can signal the onset of a new season, or offer a warning sign to keep predators at bay.
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