A community must already exist.
社区必须是已经存在的。
Similar concepts already exist.
类似的观念已经存在。
They are things that already exist.
它们是已经存在的事实。
用户名称已存在！
Proposals for all this already exist.
这些的提议已经形成。
The tables must already exist on the target.
这些表必须已经在目标数据库中存在。
Believe it or not, such metals already exist.
不管你信不信，这样的金属已经问世了。
1 - Don't children's medicines already exist?
1-不是已经有儿童药物了吗？
Fortunately, many ontologies already exist.
幸运的是，有很多现成的本体。
Create the tables (if they do not already exist).
创建表(如果还不存在的话)。
Create subregion if it does not already exist.
如果子区域尚不存在，创建子区域。
If this package does not already exist, it is created.
如果这个包已经不存在，就创建一个。
You give me the courage to lose, I already exist.
你给我的那些勇气我早已丢掉，不复存在。
If this directory doesn't already exist, create it.
如果此目录不存在，就创建它。
Create the subregion if it does not already exist.
如果子区域不存在，请予以建立。
We have to work through channels that already exist.
我们必须通过现有渠道开展工作。
Some methods already exist, for example wind power.
有些方法已经存在，例如风力发电。
Also, a variety of mature XQuery offerings already exist.
而且已经存在了多种成熟的XQuery产品。
Your wings already exist. All you have to do is fly.
翅膀一直都在，而你要做的就是去飞翔。
Various insurance schemes already exist for this purpose.
已经有各种保险计划可以实现这一目的。
What services already exist that they can use or tweak and use?
已经存在哪些服务可供使用或在调整后进行使用？
That means the pages onto which the data is placed already exist.
这意味着存放数据的页是已经存在的。
A new electrical barrier-two already exist-will soon be finished.
新的电子屏障(有两个已经存在)，将会在短期内完成。
If this directory does not already exist, it will be created.
如果该目录尚不存在，则进行创建。
It is a bill whose goal is to enforce laws that already exist.
法案的目的是要加强法律已经存在。
A Guest Satisfaction Survey should already exist on the hotel website.
酒店网站应该已设置客户满意度调查表。
Set up the application database (in practice, this might already exist)
设置应用程序数据库（实际上可能已存在）
Perhaps a few closely united groups and friendships already exist.
或许有一些严密连合组织和友情曾经存在。
But these technologies already exist in some nascent form or another.
但是，这些技术已经初步存在。
But these technologies already exist in some nascent form or another.
但是，这些技术已经初步存在。
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