The Earth Day was created to remind people to care about the earth.
设立地球日是为了提醒人们要关心地球。
The Earth day was shortened by about 1.26 microseconds within 24 hours, a negligible amount.
地球一天缩短约1.26微秒在24小时内，可以忽略不计金额。
Be mankind the initialzing of the modern environmental movement, the Earth day activity pushed many establishments of national environment lawses.
作为人类现代环保运动的开端，地球日活动推动了多个国家环境法规的建立。
Take a peek into the heavens on Wednesday night and you may get a glimpse of the Lyrid meteor shower, which this year coincides with the Earth day.
你若在周三晚上看一眼天空，就可能会看到今年和世界地球日一起到来天琴座流星雨。
To catalyze global environmental activities, the Earth Day Network developed its "a Billion Acts of Green" campaign as another theme for Earth Day 2011.
为了促进全球的环境活动，地球日网络提出“十亿绿色行动”作为2011年世界地球日的另一个主题。
Science fiction writers have long dreamed that humans might one day quit the earth to colonize other planets.
科幻小说作家们长期以来一直梦想着人类有一天可以离开地球移居到其它星球上。
It also slows down more as you move faster, which means astronauts some day may survive so long in space that they would return to an earth of the distant future.
当你移动得更快时，它的速度也会减慢，这意味着有一天宇航员可能会在太空中生存很长时间，以至于在遥远的将来他们才会回到地球。
The wisdom of the day was derived from Ptolemy, an astronomer of the second century, whose elaborate system of the sky put Earth at the center of all heavenly motions.
当时的智慧来自于二世纪的天文学家托勒密，他的复杂天空体系把地球置于所有天体运动的中心。
The wisdom of the day was derived from Ptolemy, an astronomer of the second century, whose elaborate system of the sky put Earth at the center of all heavenly motions.
当时的智慧来自于二世纪的天文学家托勒密，他的复杂天空体系把地球置于所有天体运动的中心。
If the Earth-Sun distance were as little as 1 percent larger, runaway glaciations on Earth about 2 billion years ago would have caused the oceans to freeze and remain frozen to this day.
如果地球与太阳的距离再大1%，大约20亿年前地球上失控的冰期就会导致海洋冻结，并一直冻结到今天。
Earth Day, Environmental Laws, Environmental Issues in the news, being green was entering the mainstream.
想一想世界地球日，环境法，新闻中的环境问题，不难看出环保行动正在成为主流。
In order to spin off the Moon, Earth would have had to rotate so fast that a day would have lasted less than three hours.
为了脱离月球，地球必须旋转得如此之快，以至于一天持续的时间少于三个小时。
He is always dreaming that he can fly to space to look at the earth one day.
他总是梦想着有一天能飞到太空中遥看地球。
This year is the 49th Earth Day and I think we should call on people not to cut down too many trees.
今年是第49个地球日，我认为我们应该呼吁人们不要过度砍伐树木。
Many people are playing a role in saving the earth on Earth Day.
许多人都能在地球日为拯救地球奉献一份力量。
Some environmental protection groups believe that humans will understand the true spirit of Earth Day and try their best to protect the earth.
一些环保组织认为，人类会理解地球日的真正意义，并尽最大努力保护地球。
On April 22nd, people around the world would celebrate Earth Day in different ways.
4月22日，世界各地的人们将以不同方式庆祝地球日。
Your part of the earth is towards the sun for more hours each day.
你所在的那一部分地球每天有更多的时间朝向太阳。
If we don't look after our earth carefully, the day will come when flowers will only be able to grow on the moon.
如果我们不仔细照顾我们的地球，总有一天，花将只能在月球上生长。
Each day I will keep trying to change one thing that I do to protect the earth.
每一天，我都会努力改变我所做的一件事来保护地球。
How on earth would a harried florist find the time to hold a video conference with every customer who orders flowers for Mother's Day?
一个忙碌的花商怎么可能有时间和每一位在母亲节订购鲜花的顾客进行视频会议呢?
If the Earth-Sun distance were as little as 1 percent larger, runaway glaciation on Earth about 2 billion years ago would have caused the oceans to freeze and remain frozen to this day.
如果地球与太阳的距离再大哪怕1%，大约20亿年前地球上失控的冰期就会导致海洋冻结，并一直冻结到今天。
This fact did not prevent the making of the 1961 film "the Day the Earth Caught Fire," in which nuclear testing knocks the Earth out of its orbit and towards the sun.
可是这个事实并不能阻挡1961年电影《地球起火的那一天》的拍摄，在这部电影里核试验把地球冲出它的运行轨道而走向太阳。
In an address on the eve of Earth Day, Mr. Bloomberg presented the first update to PlaNYC, which calls for such revisions every four years.
在世界地球日前夕的一次演讲中，布隆·伯格先生介绍了“规划纽约”计划的第一份修正案，该计划需要每四年修订一次。
Sometimes, the side facing the Earth is the day side, and other times it is the night side: this is why we observe moon phases.
有时，面对着地球的是“白天半球”，其它时间则是“夜晚半球”：这就是我们为什么只能阶段性地观察月球。
The 40th anniversary of Earth Day is an opportunity for us to reflect on the legacy we have inherited from previous generations, and the legacy that we will bestow upon generations to come.
地球日40周年为我们提供了一个机会，回顾我们从前辈那里继承的遗产，同时也想一想我们将为后代子孙留下什么。
They could go into lunar orbit or into solar orbit halfway between the Earth and Venus, or one day even land on the moon.
他们可能飞到月球轨道或者地球与金星之间的太阳轨道，甚至有一天降落在月球上。
She used the whole senior class to help the lower school clean up the playground on Earth Day.
她曾在地球清洁日组织整个高年级班级帮助低年级打扫操场。
She used the whole senior class to help the lower school clean up the playground on Earth Day.
她曾在地球清洁日组织整个高年级班级帮助低年级打扫操场。
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