★ intercourse（n） ～ with sb ～ between sb and sb （与国家，人等的）交际，交往
The magazine becomes a cultural medium of intercourse between the two peoples.
该杂志成为两民族间文化交流的媒介。
The friendly intercourse between our two countries can be traced back to last century.
我们两国之间的友好往来可以追溯到上个世纪。
Freed from the burdens and miseries of war, our trade and intercourse have extended throughout the world.
从战争的重负和苦难中得以解放，我们的贸易和交往遍布整个世界。
There was social intercourse between the old and the young.
老年人和年轻人之间有社会交往。
★ relation（n）关系，关联 ～ between A and B
They redetermined the relation between them.
他们重新确定了他们之间的关系。
Their relation doesn't struggle on any more.
他们之间的关系再也维持不下去了。
Greece has established full diplomatic relations with Israel.
希腊已经和以色列建立了全面的外交关系。
It is a question of the relation of ethics to economics.
这是个道德和经济之间关系的问题。