prerequisite

名词 prerequisite:

1. something that is required in advance
   同义词：requirement

形容词 prerequisite:

1. required as a prior condition or course of study

1. A degree is prerequisite for employment at this level.
   必须具备大专院校的学位才能从事这一级的工作。
2. Careful study of the market is a prerequisite for success.
   仔细研究市场情况是取得成功的先决条件。
3. Good muscles are one of the prerequisites of physical fitness.
   肌肉发达是身体健康的一个必备条件。
4. A sense of humour is prerequisite to understanding her work.
   要理解她的作品就必须具有幽默感。