在本文中,我们给出了一些简单平面图的群染色数。
In this paper, we give some group chromatic of simple planar graphs.
但不久后一群公司发现售卖专用软件是一笔有利可图的生意。
But companies soon discovered that selling proprietary software can be a very profitable business.
然而最近数十年,即便在雨季,雨水也越来越少了。图阿·格雷人尽力维持畜群的规模。
But in recent decades, as less and less rain fell during the wet seasons, Tuareg families struggled to sustain sizable herds.
This inner cell mass develops into the embryo, which this here shown at a later stage is beginning to be clear that it's becoming an organism that looks like us.
内细胞群发育成为胎儿,这张图这是一个相对晚期的阶段,能越来越清晰地观察到,这团东西开始有个人形了
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