In contrast, concatenating a string is pretty much just a case of running a single opcode to append a string variable to an existing string variable.

相反，连接字符串操作非常简单，只是运行一个操作码，将一个字符串变量附加到一个现有的字符串变量中即可。

youdao

Before running this script, you should either set the DERBY_INSTALL environment variable or modify the script so that DERBY_INSTALL points to the directory in which you installed the Derby database.

在运行这个脚本之前，或者应当设置Derby _ INSTALL环境变量，或者修改脚本，以便Derby _ INSTALL指向安装Derby数据库的目录。

youdao

The difference between changing a console variable to get a different behavior versus running an old exe, let alone reverting code changes and rebuilding, is significant.

最重要的区别在于，你要做的只是修改一下控制台参数去运行不同的版本，而不是回退代码重新编译。

youdao

Morgan can do complex calculations that were prohibitively expensive and time-consuming, such as running a trade through scenarios for both interest rate fluctuation and market volatility, rather than looking at just one variable at a time.

FORBES: Sharing Power