Ewing sarcoma is thought to arise from neuroectodermal cells, and which look like small, round, blue cells on microscopy.

尤因肉瘤被认为源于神经外胚层细胞；它们在显微镜下呈现为小的、圆形的蓝色细胞。

Weather forecasting is fiendishly complex, and improvements tend to arise not from great leaps forward but rather an accumulation of incremental advances.

预报天气是件极其复杂的事情，要想提高预测的准确性可不能一蹴而就而要靠慢慢积累。

In France, however, though the seignorage is eight per cent., no sensible inconveniency of this kind is found to arise from it.

然而，在法国，虽然铸币税为百分之八，但并没有发现由此产生的任何明显的不便。

Well, the bryophytes and seedless vascular plants were some of the first plants to arise from that event — and many of them still exist today!

苔藓植物和无籽维管植物是第一批从那次事件中产生的植物，其中许多今天仍然存在！

Osteochondroma is thought to arise from mutations in the Exostosin 1, or EXT1 and Exostosin 2 or EXT2 genes, which encode the Exostosin 1 and 2 proteins.

骨软骨瘤被认为是由于Exostosin 1（EXT1）与Exostosin 2（EXT2）基因突变引起的，这两个基因编码Exostosin 1与Exostosin 2蛋白。

The rest of cases, though, are secondary, and seem to arise from autoantibodies that are generated in response to another process like an infection, malignancies, autoimmune conditions, or medications.

另一种病因是继发性的，自身抗体来源于对机体其他疾病的应答，如感染，恶性肿瘤，自身免疫状态或药物等。

All difficult things in the world are sure to arise from a previous state in which they were easy, and all great things from one in which they were small.

天下难事，必作于易；天下大事，必作于细。

Dr. Perl said she expects more studies to arise from the data collected in this report; she now plans to investigate the dynamics of virus transmission to better understand how respiratory viruses are spread.

Perl 博士表示，她希望本报告中收集的数据能引发更多研究；她现在计划调查病毒传播的动态，以更好地了解呼吸道病毒的传播方式。