If this file does not exist, your module will not show up in the module listings.
如果这个文件不存在，那么模块就不会显示在模块列表中。
I'll be writing more about that in an upcoming post, but the point I'm trying to make is that this blog woudn't exist if not for those experiments.
我将在接下来的一篇博文中对此做更多的讲述，但在本文我想说的是：如果没有那些实验，这个博客就不会存在。
V8 will throw an exception if an error occurs - for example, when a script or function attempts to read a property that does not exist, or if a function is called that is not a function.
当错误发生时，v8会抛出一个异常。比如，当一个脚本或者函数试图去访问一个并不存在的属性，或者调用一个并不是函数的函数。
If the directory specified by LOG_STAGING_DIR does not exist, then server creates automatically.
如果LOG_STAGING_DIR指定的目录不存在，服务器将自动创建一个目录。
The second method accepts a boolean argument that determines whether or not a new Session will be created if it does not yet exist.
第二个方法接受一个布尔参数，这个参数用于判定会话不存在时是否创建新会话。
Unlike the required attribute, the MANDATORY attribute will not start a transaction if one does not exist, but rather will throw an exception indicating that a transaction is required.
与REQUIRED属性不同，MANDATORY属性将不会开始不存在的事务，而是抛出一个异常，指示需要事务。
So I think there are a lot of issues which would not exist in a positive way if Europe did not exist.
要是没有欧盟在的话，很多有利的条件都不会存在。
If the directory does not exist, the tar command does not run, so nothing is extracted.
如果该目录不存在，则tar命令不会运行，因此不会提取任何内容。
If the URI does not exist in the internal hash table, a null is returned.
如果内部哈希表中没有URI，将返回空值。
If he does not exist, everything depends on us.
如果他不存在，一切将由我们而定。
That amounts to clarifying the premise: "If God does not exist, I am god, " which still remains rather obscure.
这等于说是澄清了一个仍然相当晦涩的前提假设：“如果上帝不存在，我就是神。”
If the port type does not exist in the target WSDL, the engine creates it with the target WSDL target namespace.
如果该端口类型在目标WSDL中不存在，那么该引擎用目标WSDL的目标命名空间来创建它。
The first command creates the database (if it does not exist already) as well as a table with two columns, an issue number, and a title.
第一个命令创建数据库(如果数据库还不存在的话)和一个表，这个表包含两列——期号和标题。
If one does not exist, a SQL0286N error will be returned to the user or application.
如果不存在这样的标空间，则将向用户或应用程序返回SQL 0286n错误。
If a subform of the specified name does not exist, you receive an error.
如果指定名称的派生形式不存在，您就会收到一个错误。
If the row does not exist, then the row will be ignored and logged in the exception table.
如果这一行不存在，那么该行将被忽略，并且被记录到异常表中。
If the socket does not exist, or cannot be opened, the client attempts to spawn a server.
如果该套接字不存在，或者不能打开，客户端将尝试不停地访问服务器。
If the database does not exist, an empty database is created.
如果该数据库不存在，则创建一个空数据库。
Given a set of features and properties, the parser pool should either return a parser from an internal pool or create and store a new parser instance if one does not exist.
假定有一组特性和性质，解析器池应该从内部池中返回一个解析器，如果内部池中没有解析器，那么解析器池应该创建并保存一个新的解析器实例。
Create a new project (or use an existing project) to hold the OVF envelope files if one does not already exist.
创建一个新项目(或使用已有项目)来保存ovf信封文件(如果不存在的话)。
If the file does not exist, the installation application creates it.
如果此文件不存在，安装程序会创建它。
Checks whether or not messages exist for delivery and, if so, delivers them.
检查是否存在要传递的消息，如果存在，则传递这些消息。
This may be a catalyst for initiating an enterprise data quality initiative in the organization if one does not already exist.
对于还没有企业数据质量计划的组织，这可能是启动一个企业数据质量计划的催化剂。
A template can create tables during realization if those tables do not exist on target servers.
在实现期间，如果一些表不在目标服务器上，模板可以创建这些表。
If the task does not exist in the new version, you cannot migrate to that process version.
如果在新版本中没有这个任务，就不能迁移这个过程版本。
Because we're not passing a full path, this will be created as a subdirectory of the current working directory (if it does not already exist).
因为我们没有传递完整的路径，所以它会在当前目录下创建一个子目录(如果它还不存在的话)。
This announcement is usually intoned solemnly, as if information did not exist in other ages.
人们经常庄严宣颂这个声明，就好像在其他的时代不存在信息一样。
If a service has to be developed (if it does not already exist), then the software architect should consider submitting (publishing) it to the enterprise's service registry.
如果必须开发服务(如果不存在)，则软件架构师应考虑将其提交(发布)到企业的服务注册中心。
Shared memory is created if it does not exist, and the shared object is created within it.
如果共享内存尚不存在，就创建共享内存；并在其中创建对象。
Often, due to development timeline pressure, documentation might not exist, or, if it does exist, it might not be in synchronization with the physical data model in production.
通常，由于开发时间的压力，可能未创建文档，或者即使创建了文档，该文档也可能与生产的物理数据模型不同步。
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