1、There has been so much strife between the two families that they refuse to speak to each other.
两个家庭之间发生了如此多的纷争，以至于他们拒绝彼此交谈。

2、Political strife often arises when there is disagreement on key issues.
在关键问题上存在分歧时，往往会出现政治冲突。