There are cells within your body that are always in the process of division and forming new cells, and sometimes this is for a tissue where cells only have a finite lifetime.

你体内的一些细胞,始终在不断分裂,并生成新的细胞,很多时候,是在一些细胞寿命有限的组织中

耶鲁公开课 - 生物医学工程探索课程节选

There has already been a lot of division within the Christian community over this election.

BBC: Voters' Views: Jessica Ross

This could lead to greater division within communities and potentially marginalise all dog owners - even those trying to be responsible.

BBC: A muzzled and leashed pitbull terrier

Some commentators have suggested that the White House has intentionally fueled this division to aggravate the dissension within the GOP and pit the factions against each other.

CNN: Don't count Boehner out in debt crisis