名词和形容词是relation，relatedI've lost relations with Lucy.
我和露西失去了联系。
He is called Brady too， but we are no relation.
他也叫布雷迪 但我们不是亲戚。
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。
The relation that exists when opposites cannot coexist.
对立面不能共存的关系。Is your speech related to the theme of our conference?
你的发言和我们这次的会议主题相关吗
