数据源连接池和事先声明的高速缓存。

Data sources connection pool and prepared statement cache.

youdao

事先声明应用程序的授权操作可以对EAz授权的应用程序的结构进行测量，并提高其可维护性。

Declaring an application's authorized actions in advance brings a measure of structure to an EAz-authorized application and improves its maintainability.

youdao

尽管事先声明此项调查报告中的每个数字都不可靠，但至少可以说，世界旅游观光业的市场庞大。

With the caveat that almost every figure in this survey is suspect, it can at least be said that the world travel and tourism industry is huge.

youdao

int So whereas before I mentioned int, turns out if you wanna put a string in a variable, you have to say this is a string.

先不管我之前提到的，如果你想把一个字符串赋给某个变量，那你必须事先声明这个变量是string类型的。

哈佛公开课 - 计算机科学课程节选