n.  抗生素，抗菌素（一般用复数）

• the overuse of antibiotics  过度使用抗生素

• They are antibiotic-resistant bacteria.

  耐药菌

• For years, many of us have relied on antibiotic use to treat various infections.

  依赖于使用抗生素来治疗多种感染

• Physicians who have been on the job for several hours, for example, are more likely to prescribe antibiotics to patients when it's unwise to do so. 给病人开抗生素

• The doctor put her on antibiotics.

  医生要她服用抗生素。

BrE /ˌæntibaɪˈɒtɪk/

NAmE /ˌæntibaɪˈɑːtɪk/