求翻译：商业英文书信，一般都要求用打字机或电脑整齐地打印，左边各行开头垂直的，称为垂直式或齐头式(Block style)，美国常用这种格式；每段的第一个词缩进去，称为缩进式或锯齿式(indented style)，英国常用此格式。垂直式的职务及签名都在左边的边栏界线，这种格式，在极度尊重工作效率的美国公司，已普遍采用。是什么意思？

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Business English, and are generally required correspondence used a typewriter or computer neatly print, and on the left of the vertical line, known as Vertical or one-size-style), the United States (Block commonly used this format; each one word called indented, indent-type or serrated style (indent

The commercial English correspondence, all requests generally with the typewriter or the computer prints neatly, left side each line of openings vertical, is called perpendicular or Qi Toushi (Block style), American commonly used this kind of form; Each section first word shrinks, is called shrinks

Business English letter, typically required using a typewriter or computer neatly printed, left the vertical at the beginning of the line, known as an vertical or side by side (Block style), the United States used this format; the first word of each paragraph stand back, known as an indented or jagg

Business English letters are generally asked to use a typewriter or computer neatly printed on the left of the beginning of the line vertical, vertical, or Qi as the first type (Block style), the United States used this format; each indent to the first term, said as indented or serrated-type (indent