Since the validity of the letter of credit was going to expire in two days, there was no time to write for more detailed instructions.

由于信用证两天内就要到期，来 不及写出更详细的说明。

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It was a sealed letter, sent in the name of the king, containing instructions for the recipient.

它是一种密封的信件，以国王的名义发送，里面是对接收者的指示。

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Even the simplest of tasks also need instructions, such as how to obtain the keyboard, how to put on the screen one letter, how to save the file in the disk and so on.

甚至对最简单的任务也需要指令，例如如何取得击键，怎样在屏幕上放一个字母，怎样在磁盘中保存文件等等。

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Bishops at this time,especially of major cities, would sometimes send around what we call a paschal letter, an Easter letter. In which they'd give instructions or different kinds of things to their churches.

当时的主教，特别是主要城市的主教，会发出所谓的复活节书信，信里写着给其他教会的指示,或者其他事情。

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And finally, they learn to follow both the letter and the spirit of instructions.

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On the side of the road, with traffic whizzing by, lights flashing and you incredibly nervous, they rattle off a series of instructions that they expect you to follow to the letter.

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In another undated letter from bin Laden to his chief off staff al Qaeda's leader gave a set of detailed instructions about how best to handle his family members living in Iran once they were released.

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