The huge Firestone plantation east of the capital,Monrovia, remains the world's largest single natural rubber operation and was one of the first businesses to reopen after Liberia's long civil war.

VOA: standard.2009.09.13

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