求翻译：一次只做一件事情，并只做最重要的事情；管理者必须极为审慎地设定自己的优先顺序，随时进行必要的检讨，坚决地抛弃那些过时的任务，或者推迟做那些次要的任务；时间是最为珍贵的资源，必须极为合理地使用它。有效的管理者必须善于做有效的决策。 有效的决策关系到处事的条理和秩序 ，也就是如何按正确的次序采取正确的步骤是什么意思？

Only one thing, and only the most important thing; managers must be extremely careful to set own priorities, at any time to carry out the necessary review, and resolutely discard the outdated tasks, or to postpone the secondary task ; time is most precious resource, to be very reasonable to use it.

One can only do one thing, and only take the most important thing; managers to be extremely careful to set their own priorities and make the necessary review at any time, and give up those that are obsolete, or defer to do minor tasks; time is one of the most valuable resources to be very reasonable

One time only handles a matter, and only handles the matter of primary importance; The superintendent must establish own extremely carefully order of priority, carries on the essential self-criticism as necessary, abandons these obsolete duties firmly, or the postpone makes these secondary duties; T

Do one thing at a time, and only the most important things; managers must be very careful to set their own priorities, necessary at any time to review, resolutely discard outdated task or defer tasks do those minor; time is the most precious natural resource, must be extremely judicious use of it. E