Generating a viable cell from scratch is an enormous challenge .

从零开始生成可生长的细胞是一项巨大的挑战。

Many plants follow simple recursive formulas in generating their branching shapes and leaf patterns .

很多植物在生成分枝形状和叶片图案时遵循简单的递归法则。

But he said the facility could still be valuable for generating hypotheses about environmental effects .

不过，他说，这个设施对生成环境影响的假设仍然具有重要的价值。

Current treatments for baldness attempt to stimulate hair growth from existing follicles rather than generating new ones .

目前治疗秃顶的方法，是试图刺激已有毛囊的毛发生长，而非生成新的毛囊。

Jaron 's hi-tech method of generating visitable worlds had been pioneered years earlier by institutional researchers including nasa .

美国宇航局等机构早在几年前就开始研发这种生成可造访的世界的技术了。