您可以将变量的这些“线程局部”副本看作是与缓存类似，在每次线程需要访问变量的值时帮助它避免检查主存储器。

You could consider these "thread-local" copies of variables to be similar to a cache, helping the thread avoid checking main memory each time it needs to access the variable's value.

youdao

首先，可以显式地检查NOT FOUND警告(如果想这样做的话)，而不必在局部变量中保存SQLCODE和SQLSTATE。

First of all, the checking for a NOT FOUND warning can be done explicitly, if so desired, without having to save away the SQLCODE and SQLSTATE into local variables.

youdao

还要认识到一点：可以将检查添加到把Opts词典条目转换为局部变量的循环中。

Another thing to realize is that you can add the checks to the same loop that you use to create local variables from the Opts dictionary.

youdao