The value declared is for customs purposes only.

所标价值仅供海关事宜。

youdao

A variable is initialized with an empty text string as its default value when declared.

一个变量会使用一个空白的字符串作为声明时的默认值，来得到初始化。

youdao

Use this method to obtain the return value of the RPC when RPC is declared with return value.

如果RPC声明了返回值，那么使用该方法来获取RPC的返回值。

youdao

> David: At some point in time, I'm going to have to have declared the variable as a float before I can then hand it to printf as the insertion value for that format strength.

>，大卫：在一个特定的时间，我将需要,声明float类型这样的变量,那样我就可以把它打印出来,像是格式化优点的插入值。

哈佛公开课 - 计算机科学课程节选

float So thus far, when we've defined -- declared an int and a float, 2 and so forth, we just put one value in there, the number 2, the number 3.14, just one single value.

至此，当我们定义--声明一个int，和一个，等等，我们只要在那里放置一个值，数字，数字3，14，只有一个值。

哈佛公开课 - 计算机科学课程节选

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