ReadWriteQuiz
Chinese dictionary
be as close as lips and teeth; be closely related and mutually dependent
兄弟邻国唇齿相依。
The fraternal neighbouring countries are closely related as lips and teeth.
我们唇齿相依。
We depend on each other like lips and teeth.
曾几何时，人类与海洋中的生灵唇齿相依。
Once, man and those in the water were linked.
Word usage
- Note"唇齿相依" is usually used to describe the relationship between countries or groups, sometimes the relationship between people.