1. 药;药物;药品
    A drug is a chemical which is given to people in order to treat or prevent an illness or disease.

    e.g. The drug will be useful to hundreds of thousands of infected people.
           这种药将惠及成千上万的感染者。
    e.g. ...the drug companies.
           制药公司

2. 毒品
    Drugs are substances that some people take because of their pleasant effects, but which are usually illegal.

    e.g. His mother was on drugs, on cocaine...
           他母亲吸毒，吸可卡因。
    e.g. She was sure Leo was taking drugs...
           她确定利奥在吸毒。

3. 将…麻醉;给…服麻醉剂
    If you drug a person or animal, you give them a chemical substance in order to make them sleepy or unconscious.

    e.g. They drugged the guard dog with doped meatballs...
           他们用掺了麻醉药的肉丸子麻醉了看门狗。
    e.g. She was drugged and robbed.
           她被人下了药，然后遭到抢劫。

4. 往（食物或饮料中）投放麻醉药
    If food or drink is drugged, a chemical substance is added to it in order to make someone sleepy or unconscious when they eat or drink it.

    e.g. I wonder now if that drink had been drugged...
           我现在想那饮料是否被人动过手脚。
    e.g. Anyone could have drugged that wine.
           指不定谁在那酒里下了药。