软件工程师们设计和试验各种各样的软件，有电脑游戏，操作系统和商业应用软件。
Software engineers design and test a variety of different types of software, from computer games to operating systems to business applications.
在临床试验中各种各样的随机化设计有着广泛的应用。
Kinds of randomized designs are often used in clinical trials.
为此，各种各样的软件设计法被提出和应用，但得出的结构容易依赖于设计者的主观因素，这也是阻碍软件复用的原因之一。
So far, various techniques have been proposed. However, the software structure derived, deeply depends on the skill of a designer. As a result, software reuse has not been effectively promoted.
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