艾丽斯每天在镜子前前花半个多小时化装。
Alice spends more than half hour in making up herself before glass every day.
大多数学者都认为中国的第一个朝代是大约公元前前2100年到公元前1600年的夏朝。
Most of scholars agree that the first dynasty of China was the Xia about 2100 to 1600 B.C..
有些人认为生活在公元前551年到公元前479年的著名学者孔子推动了筷子的发展。
Some people think that the famous scholar Confucius living from about 551 BC to 479 BC pushed the development of chopsticks.
事实上，这里有两个时期的降雨和湖泊形成：第一个始于大约37000年前；而第二个可以追溯到约一万年前。
There were actually two periods of rain and lake formation: the first one began about 37,000 years ago; and the second one dates from about 10,000 years ago.
它可能是几个小时前或几天前在你的肺里制造的。
It may have been manufactured hours or days ago in your lungs.
俄勒冈州塞勒姆的西海岸甜菜种子公司的前经理伯特在退休前帮助建立了这个系统。
George Burt, the former manager of the West Coast Beet Seed Co. in Salem, helped set up this system before he retired.
更新世，也就是众所周知的冰河时代，从180万年前持续至11500年前。
The Pleistocene epoch, most commonly known as the Ice Age, stretched from 1.8 million to 11,500 years ago.
今天，我们将涵盖旧石器时代晚期，我大致定义为公元前35000年到公元前8000年。
Today, we will be covering the Upper Paleolithic Period, which I am roughly defining as the period from 35,000 to 8,000 BC.
撒哈拉地区的岩画显示，人们曾利用马匹和马车来横穿沙漠；并且，在公元前300年至公元前200年间，有一些可以穿越撒哈拉地区的贸易路线。
Rock paintings in the Sahara indicate that horses and chariots were used to traverse the desert and that by 300-200 B.C., there were trade routes across the Sahara.
玻璃的起源可以追溯到公元前3500年，但直到2000年前的罗马帝国，吹制玻璃的艺术和玻璃的实际使用才变得更加广泛。
The origins of glass date back to 3,500 BC but it wasn't until the Roman Empire, 2,000 years ago, that the art of glass-blowing and the practical uses of glass became more widespread.
最后一次冰川作用的漂浮物沉积在最近的其中一个地质时期——更新世，这段时期从180万年前持续到1万年前。
The drift of the last glaciation was deposited during one of the most recent epochs of geologic time, the Pleistocene, which lasted from 1.8 million to 10,000 years ago.
另一个窃取玩耍时间的因素：孩子们花在屏幕和电子设备前的时间越来越多，甚至学龄前儿童也是如此。
Another playtime thief: the growing proportion of kids' time spent in front of screens and digital devices, even among preschoolers.
石英是石英——由四个氧离子围绕的硅离子——200万年前的更新世石英和5亿年前的寒武纪石英之间没有任何区别。
Quartz is quartz—a silicon ion surrounded by four oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.
国内生产总值已回升至衰退前的水平，这意味着我们的产出与衰退前一样多，但只用了比之前少6%的工人。
Gross domestic product has climbed back to pre-recession levels, meaning we're producing as much as before, only with 6 percent fewer workers.
全球气温可能会回到工业化前的水平，但风险是两极的温度仍将高于正常水平，而热带地区的温度将比工业化前的要低。
You may bring global temperatures back to pre-industrial levels, but the risk is that the poles will still be warmer than they should be and the tropics will be cooler than before industrialisation.
十年前，《新闻周刊》发布了第一份基于大学水平考试参与度的排行榜，当时排名前100位的学校中，只有三所学校的毕业班学生人数少于100人。
Ten years ago, when the first NEWSWEEK list based on college-level test participation was published, only three of the top 100 schools had graduating classes smaller than 100 students.
公元前221年至公元前210年，他开始修建长城。
Between 221 and 210 B. C., he started the building of the Great Wall.
这个演员通常在表演前就已经计划好了前两个技巧，然后全力以赴。
This actor often has the first two tricks planned before performing, and then goes for whatever.
公元前551年至公元前479年，著名哲学家孔子在中国生活和工作。
One famous philosopher, Kong Zi, lived and worked in China from 551 BC to 479 BC.
在公元前3000年到公元前1000年，即青铜器被广泛使用的这一时期，通常被称为青铜时代。
The period from 3000 to 1000 B.C.E., when the use of bronze became widespread, is normally referred to as the Bronze Age.
前体离子扫描是指监测前体离子的特定损失。
Precursor ion scanning refers to monitoring for a specific loss from the precursor ion.
然后，您可以将现在的文件与几分钟前、几小时前或几天前的文件相比较。
Then, you can compare a file to what it was a few minutes, hours, or days ago.
这项研究是许多类似研究中最新的一个，它指出无论是在电脑前还是电视前，对着屏幕时间过长会产生不良影响。
The study is the latest of many to point out the ill effects of excessive screen time, whether at the computer or the television.
你还可以对面试官强调一下你和前上司以及前同事们关系良好。
You may also want to emphasize good relationships with former managers and coworkers in the interviewer.
是什么使得,一天前或者一年前甚至十年前的我和现在的我是一样的呢？
What is it that makes me the same person as I was a day ago or a year ago or ten years ago?
前10 大商场的前50 家使用 SCVNGR 的店铺将可以免费开启奖励任务。
The first 50 businesses in the first 10 markets will get to use SCVNGR rewards free of charge.
周三的考试将会涵盖，我们前五讲，和前两次家庭作业的内容。
The exam on Wednesday will cover our first five lectures and the first two homework assignments.
如果你在一个维基站读什么东西，我不希望这个东西是一年前，一天前，或者几分钟前写就的成为一个问题。
If you're reading something in a wiki, I didn't want it to matter to you whether it was written a year ago, a day ago, or just a minute ago.
应该观察前24小时、前一周和前一个月的使用量模式。
Review the utilization patterns for the previous 24 hours, the previous week, and the previous month.
应该观察前24小时、前一周和前一个月的使用量模式。
Review the utilization patterns for the previous 24 hours, the previous week, and the previous month.
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