Section two presents some results concerning (2K_1+K_2)-free graphs. Gyárfáshas showed that chromatic number of (2K_1+K_2)-free graphs has no linear upperbound in terms of their clique number.
在第二章中，我们给出了(2K_1+K_2)-free图的一些结果．对于(2K_1+K_2)-free图，Gyárfás已经证明了其色数不能找到一个与团数有关的线性的上界。
参考来源 - 不含某些图作为导出子图的图的色数·2,447,543篇论文数据，部分数据来源于NoteExpress
一团闪电在蒙大拿上空噼啪作响，数条闪电砸向地面。
A tangle of lightning, including multiple ground strikes, crackles in the Montana sky.
根据华尔街日报查德·布雷的报道，陪审团裁决后，特纳的保释已被取消，但审判日期却还是个未知数。
According to reporting by the WSJ's Chad Bray, Turner's bail was revoked following the conviction. No date has been set for sentencing.
喷发处方圆数百公里内，连续数天或数星期，浅灰色的火山灰会一团团像雪一样从天空飘下。
For hundreds of kilometers around the eruption and for perhaps days or weeks, pale-gray ash would fall like clumps of snow.
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