1.The silver coinage was repeatedly debased with copper vellon.

1.银币一再用铜币维隆来替代，实行贬值。

2.The lasting war debased the value of the dollar.

2.持争使美元贬值。

3.The azote in the non-point source pollution debased the w...

3.后探讨了解决营养化控制措施。

4.Such unkind action debases you.

4.这种不和善行为贬低了你自己人格。