提供不同片数组合，可随意增减，方便安装。
Array of different pieces, it can be arbitrarily increase or decrease, and be easy to install.
但是，有些深印在生命里的记忆，却是不容我随意增减，也不容我退让迁就的，那怕只是一棵小小的花树。
However, some memory impressed deeply in my life is not allowed of increasing or reducing casually by myself, nor does it admitted me to give way, even if it is simply a little plant of flower.
同时，系统的灵活性也使得系统设备可以随意增减，系统结构可以随时根据业务开展的情况进行调整。
At the same time, the system's flexibility also makes equipment can be changed arbitrarily and the system structure can be adjusted according to conditions of services.
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