为了提高速度，优秀的构建器应该只重新编译用户更改的部分—这倒并非一定是件容易的任务。

To speed things up, a good builder should only recompile what the user has changed — not that this is necessarily an easy task.

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管理数据库模式的更改是件乏味的事情。

Managing database schema changes can be tedious.

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IT基础设施中的更改(硬件、系统、中间件和通信)。

Changes in IT infrastructure (hardware, systems, middleware, and communications).

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