在处理签出时，我选择使用两个事件而不是一个，这样可以防止发生双命令。

I might choose to use two events instead of one while processing a checkout to prevent double orders.

youdao

这次测试是在一个Windows XP双核笔记本计算机上执行的，使用DB 2 V 9.1代码库，模拟几个只由connect语句组成的DB 2命令行处理程序作业流。

This test was performed on a Windows XP dual-core laptop, using DB2 V9.1 code base, simulating several DB2 command line processor job streams that consisted exclusively of connect statements.

youdao

其实，我通过这个命令的工具和北部被运时是双盒装，以帮助减少损失的机会。

I actually ordered this thru northern tools and when it was shipped it was double boxed to help minimize chances of damage.

youdao