border
/ˈbɔrdər/
a line that indicates a boundary
中文释义：边界；边境
The river forms the natural border between the two countries.
这条河构成了两国之间的自然边界。
They crossed the border into Canada without any trouble.
他们毫无麻烦地越过边境进入加拿大。
/ˈbɔrdər/
a line that indicates a boundary
中文释义：边界；边境
The river forms the natural border between the two countries.
这条河构成了两国之间的自然边界。
They crossed the border into Canada without any trouble.
他们毫无麻烦地越过边境进入加拿大。