Never put off the work till tomorrow what you can put lff today.
不要等明天交上差再找借口，今天就要找好。
Careers, like rockets, don't always take LFF on schedule. The key is to keep working on the engines.
事业就像火箭并非总是依时升空。关键是始终保持动力。
The definition and formula of flexibility of arbitrary rectilinear blocks are introduced and LFF principles are extended to handle arbitrary rectilinear blocks and blocks with relative constraints.
给出了直角多边形模块自由度的定义和公式，扩展了最小自由度优先原则，使算法能够处理任意直角多边形模块以及有相对约束的模块。
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