Alert is a function invocation, with a single string as a parameter.
alert是个函数调用，只有一个字符串作为参数。
In this case, the function invocation must be accomplished using a POST request (as opposed to a GET request).
在本例中，这个函数调用必须通过POST请求(而非GET请求)完成。
A closure "closes around" these references, so the function invocation can safely refer to the variables even when the variables have gone out of scope!
一个闭包封闭了这些引用，所以函数调用可以安全的引用这些变量，即使它们已经超出了函数的作用域。
If you don't specify all of the parameters during a function invocation; you must explicitly name the parameters you're specifying so the Python interpreter can properly call the function.
如果您在函数调用期间未指定全部参数，则必须显式地写出您所指定的参数的名称，以使Python解释器能够正确地调用函数。
But, if you also wanted to use the standard PHP strlen function (say, within your own strlen implementation), you'd need to precede the function invocation with a backslash, as Listing 10 shows.
但是，如果也希望使用标准的PHPstrlen函数(比如在自己的strlen实现内部)，就需要在函数调用前面加上反斜杠，见清单10。
Some of the benefits and flexibility of object-oriented programming stem from this separation of function invocation and implementation.
面向对象的程序设计的一些优点和灵活性源于将功能的引发和实现相互分离这一技术。
Two caveats apply to this construct: It is not safe in the face of exceptions, and the return value will be the return value of the last function invocation.
对于这个结构有2个警告：在异常面前不安全；返回值是最后一个方法调用的返回值。
It analyses the architecture and major components of OGSI. NET, discusses service function invocation and security of OGSI. NET and attribute - based programming for grid computing.
分析了ogsi.net的体系结构和主要组件，讨论了ogsi.net的服务调用过程、安全性和基于属性的网格计算编程。
However, what if the application wanted to track other data such as the value of certain variables or even attempt to profile the code by recording the duration of a particular function invocation?
但是，若是应用程序想要跟踪其他数据(比如某些变量的值)或者甚至试图通过记录特定的函数调用过程来剖析代码，那么情况又是如何呢？
However, what if the application wanted to track other data such as the value of certain variables or even attempt to profile the code by recording the duration of a particular function invocation?
但是，若是应用程序想要跟踪其他数据(比如某些变量的值)或者甚至试图通过记录特定的函数调用过程来剖析代码，那么情况又是如何呢？
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