contrary drug

例句：

1. 1. Contraceptives are drugs that prevent pregnancy.
   避孕药是防止怀孕的药物。
2. 2.The doctor prescribed the contraceptive drug for her.
   医生给她开了这种避孕药。
3. 3.Contraceptives are often used to prevent unwanted pregnancies.
   避孕药通常用于预防不希望的怀孕。