允许救援人员通过卫星与外界取得联系的技术已经存在。
The technology to allow relief workers to contact the outside world via satellite already exists.
这使人们确信天文周期已经存在了数十亿年。
It assures that the astronomical cycles have been in existence for billions of years.
就像我之前说到的，铀铅年代测定法已经存在一段时间了。
Like I said before, Uranium-Lead Dating has been with us for a while.
例如，当美国在1848年获得新墨西哥的主权时，大草原就已经存在了。
For example, the Rio Grande pueblos already existed when the United States acquired sovereignty over New Mexico in 1848.
知道海水的盐度和大致的水量之后，他计算出了海水中已经存在的盐的量。
Knowing the salinity of ocean water and the approximate volume of water, he calculated the amount of salt already held in solution in the oceans.
和以前一样，为此流程输入任意名称，并提供系统中已经存在的唯一个人身份证号码。
As before, enter any name for this process along with a unique person ID that already exists in the system.
虽然我们不知道这其中有多少是真实的，但可以肯定的是，丝绸栽培在中国已经存在了几千年。
While it is unknown just how much of this is true, it is certainly known that silk cultivation has existed in China for several millennia.
根据最近的一项调查，尽管网上零售已经存在了大约20年，但近一半的网上零售商仍然没有收到满意的消费者反馈。
Although online retailing has existed for some twenty years, nearly half of the internet retailers still fail to receive satisfactory feedback from consumers, according to a recent survey.
他反复琢磨那些已经存在的、但尚未成熟的创意，例如鼠标驱动的电脑、数字音乐播放器、智能手机、平板电脑等，并向其他公司展示如何让这些构思变为现实。
He repeatedly took an existing but half-formed idea—the mouse-driven computer, the digital music player, the smartphone, the tablet computer—and showed the rest of the industry how to do it properly.
美国本土语言在欧洲殖民以前就已经存在了，现在美国已经丢失了超过三分之一的本土语言。剩下的192种语言被联合国教科文组织列为介于“不安全”和“灭绝”之间。
The US has already lost more than a third of the native languages that existed before European colonization, and the remaining 192 are classed by UNESCO as ranging between "unsafe" and "extinct".
它在那里已经存在了350多年。
电动汽车已经存在了超过一百年。
Electric vehicles have been around for more than a hundred years.
电动汽车似乎是最近才发明的，但它们其实已经存在很多年了。
Electric cars may seem like a recent invention, but they've been around for years.
它已经存在了几百年了。
我们被引导着去相信我们能找到很大一部分经过多年冻结形成的更古老、更厚的冰层，这些冰已经存在很多年了，而且会越来越厚。
We'd been led to believe that we would encounter a good proportion of this older, thicker, technically multi-year ice that's been around for a few years and just gets thicker and thicker.
甚至在公元前9-6世纪，在领土上已经存在一个强大的国家，称为乌拉尔图。
Even in the 9th-6th centuries BC there already was a powerful state called Urartu on its territory.
如果路已经存在，那也不是你的路。
此操作失败，因为键已经存在。
列表示任何已经存在的函数或方法。
The columns represent any functions or methods that already exist.
存储过程是必需的或者已经存在。
如果队列已经存在，返回其句柄。
这时已经存在大量潜在问题了。
在大西洋彼岸类似的组织已经存在。
如果键已经存在，那么它就会被更新。
我们假定此目录已经存在了。
在思考了一会之后，他说已经存在了。
实际上，这种神药已经存在。
我们已经存在130多年了。
如果这个模式已经存在，那么先删除它。
如果键已经存在，则之前的值将被替换。
If the key already exists, then the previous value will be replaced.
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