1、Curzon line: Demarcation line between Poland and Soviet Russia.
寇松線(xiàn)：波蘭和蘇俄之間的邊界線(xiàn)。

2、Where is the fine demarcation line between Love and Friendship?
哪里是友誼和愛(ài)情的細(xì)微分野？

3、There is no demarcation line along the Yalu River.
鴨綠江是沒(méi)有界線(xiàn)的。