field of definition

基本解释

Any initializations that occur at the point of field definition are executed.
执行所有出现于域定义的初始化动作；
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The necessary condition of a function being an elementary function is that the function is a continuous function in the field of definition.
函数为初等函数的必要条件是函数在定义域内为连续函数。
The issue of Federal sponsorship of foreign research into the emerging field of high-definition television took center stage at Congressional hearings today.
由联邦政府赞助外国从事高清晰度电视这门新兴技术的研究，今天在国会听证会成为中心议题。

True door-to-door field sales is almost extinct, and has of necessity become a hybrid by our definition.
FORBES: What is Inside Sales? The Definition of Inside Sales
The definition of a concussion does not require a player to be unconscious and motored off the field.
FORBES: The Death of the NFL