expansion

expansion
noun
  1. [mass noun]the action of becoming larger or more extensive
    扩大;扩充;扩展
    the rapid expansion of suburban London.
    伦敦郊区的迅速扩展。
    [count noun]a small expansion of industry.
    工业的小幅发展。
    ■extension of a state's territory by encroaching on that of other nations, pursued as a political strategy
    (领土)扩张
    German expansion in the 1930s.
    20世纪30年代德国的扩张。
    ■[count noun]a thing formed by the enlargement, broadening, or development of something
    扩展部分;扩大物;扩充物
    the book is an expansion of a lecture given last year.
    这本书是在去年的一个讲座基础上扩写而成的。
    ■the increase in the volume of fuel on combustion in the cylinder of an engine, or the piston stroke in which this occurs
    (汽缸或活塞冲程内的)燃料增加
语源
  1. early 17th cent.: from late Latin expansio(n-), from Latin expandere (see expand)
英语宝典
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