可以这样设想，将一块有弹性的包装纸钉在礼物的各顶点上。
Imagine a stretchy wrapping paper that you pin to your gift at the vertices.
计算是结构化的，以有向图的方式进行：程序是图形顶点，而通道则作为图的边。
The computation is structured as a directed graph: programs are graph vertices, while the channels are graph edges.
国际货币基金组织表示，中国居民消费价格有可能在未来一两个月达到顶点，但房价将更加难以控制。
The IMF says China's consumer prices is likely to peak within the next month or two, but housing prices will be more difficult to tame.
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