friction/ˈfrɪkʃ(ə)n/
n.1. 摩擦力Friction gradually caused the sliding box to slow down and stop.摩擦力使向下滑的箱子渐渐慢下来后停住。
2. 摩擦Matches are lighted by friction.火柴由摩擦而生火。
3. 倾轧；冲突constant friction between the two nations两国之间一再发生的冲突
There is some friction among the family members.家庭成员间有些摩擦。
The constant friction between the young couple finally caused divorce.小夫妻俩之间经常的冲突终于导致了离婚。