每个平台在技术领域中都有自己的位置，在整个软件开发历史中都有自己相对流行的时期。
Each has its place in the technology landscape and each has enjoyed periods of relative popularity throughout the history of software development.
另一方面，软件开发的困难由来已久，但在不同的时期软件开发的困难突出于不同的方面。
On the other hand, the software crisis has emerged for a long time, but the difficulties of software developing are various in different periods.
另一方面，软件开发的困难由来已久，但在不同的时期软件开发的困难突出于不同的方面。
On the other hand, the software crisis has emerged for a long time, but the difficulties of software developing are various in different periods.
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