一次吸毒，终生戒毒。

A drug, a lifelong addiction.

毒品是人类社会的公害。

Drugs are the hazards of human society.

扫除毒害，利国利民。

Remove poison, reasonably.

远离毒品，义不容辞。

Stay away from drugs, obligatory.

禁毒，从你我做起。

Drug, from you with me.

这些标语简洁明了，能够有效传达禁毒的重要性，提醒人们远离毒品，珍爱生命。