The exhibition traces the history of graphic design in America from the 19th century to the present.
这个展览会追溯了从19世纪到现在美国平面设计的历史。
'I have eaten' is the present perfect tense of the verb 'to eat', 'I had eaten' is the past perfect and 'I will have eaten' is the future perfect.
Ihave eaten是动词eat的现在完成时；Ihad eaten是过去完成时；Iwill have eaten是将来完成时。
The present wave of political killings is the work of people trying to derail peace talks.
现在的政治谋杀浪潮是那些试图破坏和平谈判进程的人所为。
For a few years its luminosity flared up to about 10,000 times the present-day luminosity of the Sun.
有几年它的亮度一度达到了现在的太阳亮度的一万倍左右。
'I am' is the first person singular of the present tense of the verb 'to be'.
Iam是动词to be现在时的第一人称单数。
The present crop of books and documentaries about Marilyn Monroe exploit the thirtieth anniversary of her death.
现在这批有关玛丽莲·梦露的书籍和记录片是借她去世三十周年纪念之机而发行的。
Ant societies existed in something like their present form more than seventy million years ago.
蚂蚁社会大约在七千万年前就以类似现在的形式存在。
What connected the 19th century and our present time was the development of wireless communication.
无线通信的发展将19世纪与我们现在的时代联系起来。
We are guided by a belief that good things will happen for us in the future if we take proper care of the present.
我们被这样一种信念指引着：如果我们过好现在的生活，未来就会有好事发生。
From that time to the present, sails have been used only for pleasure and sporting boats.
从那时起到现在，帆船的用途仅限于娱乐和体育用船了。
In sum, the data revolution is giving us wonderful ways to understand the present and the past.
总而言之，数据革命为我们提供了理解现在和过去的绝佳方式。
Other members of the autoworker's family might be less inclined to trade the present for the past.
汽车工人家庭的其他成员可能不太愿意用现在交换过去。
Other members of the autoworker's family, however, might be less inclined to trade the present for the past.
然而，汽车工人家庭的其他成员可能不太愿意用现在交换过去。
Consciousness links past attention to the present and permits the integration of details with perceived ends and purposes.
意识将过去的注意力与现在联系起来，并允许将细节与感知的目的和宗旨结合起来。
It studies these populations in the past, present and future using quantitative data and mathematical models as tools of analysis.
它使用定量数据和数学模型作为分析工具，研究这些人口在过去、现在和未来的情况。
It studies these populations, in the past, present and future, using quantitative data and mathematical models as tools of analysis.
它使用定量数据和数学模型作为分析工具，研究这些物体在过去、现在和未来的数量。
There is much on the surface of the present play to support the conventional view of its mood of secular realism.
从现在这部剧的表面上看，有很多东西支持世俗现实主义情绪的传统观点。
You may feel guilt over your past, but you are poisoning the present with the things and circumstances you cannot change.
你可能会对你的过去感到内疚，但这是在用无法改变的事和境况来荼毒你的现在。
I want to tell you about the past, present and future of the human population, so let's start with a few problems.
我想告诉你们关于人类的过去、现在和未来的事情，所以让我们从一些问题入手。
I want to tell you about the past, present and future of the human population. So let's start with a few problems.
我想告诉你们有关人口数量的过去、现在和未来。那么让我们从一些问题入手。
You can use it in exactly the same way as your present card, and the Plus sign means you can take money from your account at even more cash machines.
您可以用与您现在的卡完全相同的方式来使用它，而且加号意味着您可以从更多的自动取款机上取钱。
That means a higher proportion of what is in the sea is being caught, so the real difference between present and past is likely to be worse than the one recorded by changes in catch sizes.
这意味着更多的海洋生物正在被捕捞，所以现在和过去之间的真正差异可能比捕捞量变化所记录的更糟糕。
Chatting with parents every day not only keeps the present relationship strong, it also can help a might be worse relationship get better.
每天和父母聊天不仅能保持现在的关系牢固，还能帮助可能恶化的关系变得更好。
The present Catherine has no other likeness to her, except a breadth of the forehead and a certain arch of the nostril that makes her appear rather haughty.
现在的凯瑟琳没有别的地方像她，除了宽额和有点拱起的鼻孔，这使她显得简直有点高傲。
In some agricultural colleges at the present time, young men have to do a year's work on a farm before their theoretical training at college.
在现在的一些农业大学里，年轻人在接受大学的理论培训之前，必须在农场干上一年的活。
About 400 million years ago, when the present-day continents of North America and Europe were joined, the Caledonian mountain chain was the same size as the modern Himalayas.
现在的北美大陆和欧洲大陆大约在40亿年前是连接在一起的，在那时，加勒多尼亚山脉与现代的喜马拉雅山脉一样雄伟。
In Earth's earliest atmosphere, methane and carbon dioxide occurred at much higher levels than at present-a circumstance that was favorable for early life.
在地球最早的大气层中，甲烷和二氧化碳的含量比现在要高得多，这对早期生命来说是有利的。
They argue that the first hunter-gatherers to develop rice agriculture must have done so in this southern zone, within the apparent present-day geographic range of wild rice.
他们认为，最早发展水稻农业的狩猎采集者一定是在这个南部地区，在现在野生水稻明显的地理范围内。
Comets formed in circular orbits but were gravitationally flung into their present-day elliptical orbits when they ventured too close to planets.
彗星在圆形轨道上形成，但当它们冒险太接近行星时，就会被引力抛入现在的椭圆轨道。
Comets formed in circular orbits but were gravitationally flung into their present-day elliptical orbits when they ventured too close to planets.
彗星在圆形轨道上形成，但当它们冒险太接近行星时，就会被引力抛入现在的椭圆轨道。
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