本文不利用收缩方法，直接证明了：当图G至多差一边有两棵边不相交的生成树时，G是超欧拉图或者G有割边。

In this note, no using the contraction method, we prove that if a graph G is one edge short of having two edge-disjoint spanning trees, then G has a cut edge or G is supereulerian.

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当拖垮，骨爪制定了一个锋利的理想切割和割。

When worn down, bony claws developed a sharp edge ideal for cutting and slashing.

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一下子要把比尔的头发给割失，一下子把比尔当马骑，一下子给比尔吃沙子。

A bill to the hair to cut off, while the bill when riding horses, while eating sand to bill.

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In "Mowing," the poem's lines are like sweeps of the scythe as it lays down rows of swale. Frost wants us to think about that.

在“割草“中字里行间就像是镰刀扫过,当它放倒一排排的麦子时，弗罗斯特想要我们仔细思考。

耶鲁公开课 - 现代诗歌课程节选