We don't need to really talk about all the molecular detail in order to completely describe a DNA or an RNA molecule because these structures repeat themselves.

我们在完整的描述一个DNA或RNA时,不需要说明,分子上的每一个细节,因为它们的结构都是重复的

耶鲁公开课 - 生物医学工程探索课程节选

Some 99, 000 police officers are being deployed around the country in order to prevent a repeat of the violence, the AP news agency reports.

BBC: Mwai Kibaki calls on Kenyans to embrace peace

They were due to be held on 5 May 2011, but Scottish ministers heeded the advice of the Gould Report and split the Holyrood and local government elections - in order to avoid a repeat of the 2007 count fiasco.

BBC: Local government elections 2012 debate

The plan must still be approved by Judge Beckloff, who could put provisions into the custody order designed to prevent a repeat of this month's incidents.

CNN: Despite 'Unity' concert, Jackson family feud simmers