CRISPR的力量在于它让我们以前所未有的精确度编辑基因组。

The most beautiful curves on a woman are her smiles.

I am always glad to think that my education was, for the most part, informal, and had its roots in the soil.

以物易物、互通有无的倾向是人类共有的，也是其他动物所没有的。