Building the architectural model requires understanding the system itself, since its source code does not offer much help.
构建架构模型需要对系统本身的了解，因为其源代码没提供很多帮助。
So it suggests the risk-driven model to help you apply the most valuable ones, then get back to delivering your system.
所以，本书推荐风险驱动模型，它指导你应用最有价值的架构技术，然后回到交付系统的工作之上。
Although it is easy to model mathematically, making the system in the lab is tricky because it starts without any enzymes or templates to help the monomers assemble.
虽然它很容易用数学来建模，但在实验室里实现这个系统则让人颇费思量，因为里面缺乏了能帮助组装单体的酶和模板。
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