define

• Their contexts of usage should be carefully defined .
  它们的应用范围要谨慎规定。
• Linguistics can be defined as the science of language .
  语言学是研究语言的科学。
• The feeling was hard to define .
  这种感受是难以形容的。
• Heat and work are defined only in terms of processes .
  热和功只能根据过程来确定。
• Secondly it is necessary to define the applied load .
  其次，需要确定所作用的载荷。
• A derivative is defined by a limiting process .
  导数是通过一个极限过程加以规定的。
• Turbulence is defined as a series of irregular gusts .
  紊流定义为一组无规则的突风。
• Such a graph is defined to be a contact network .
  我们把这样的图定义为一个接触网络。
• The purpose was to define the constitutional position .
  目的是确立议会的宪法性地位。