相反，如果要反复执行多次一条简单的语句，并且每次使用不同的值执行，建议使用 PreparedStatement，因为语句只需编译一次。
The opposite is true: PreparedStatement is recommended when a simple statement is executed many times with different values because the statement has to be compiled only once.
在您的UNIX系统上监视进程或执行其他一些功能时，您需要多次反复键入相同的命令。
How many times do you type the same command over and over while monitoring a process or performing some other function on your UNIX system?
你应将每个月的测试通过电子表格进行记录和管理，以避免无意中对同样元素进行反复、多次的重复测试(从而降低了效率)。
Every month you should track your results in a spreadsheet to avoid accidentally re-testing the same elements over and over again.
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