Where a step is a comparison or an arithmetic operation.

第一步肯定是比较,或者进行某种算法的操作。

麻省理工公开课 - 计算机科学及编程导论课程节选

It's very important in the biological operation of human cells and that step is RNA splicing, or processing of this RNA, single stranded RNA that's produced by transcription.

而这对人类细胞生物运作至关重要,这个步骤就是RNA剪接,或者说是对RNA的加工,对转录出的单链RNA进行加工的步骤

耶鲁公开课 - 生物医学工程探索课程节选