The two core concepts of ontology are system and element, where.

本体的两个核心概念是系统和元素，其中。

youdao

A more flexible and maintainable system built with patterns is therefore a critical element for a successful SOA.

因此利用模式建立一个更灵活和可维持的系统成为SOA成功的关键因素。

youdao

For example, if a stereotype S is applied to the element E, the system will display E in Project Explorer and on diagrams for that element.

举个例子，如果一个原型S 被应用到元素 E, 系统将会显示 E 在项目浏览器中 ，并且在图表里显示元素。

youdao

Among the other options 4moms is considering is a sound system, and perhaps a heating element to keep baby toasty on even the most frigid days.

WSJ: Cutting Edge, for Baby

And so the question is, is there a way of achieving simplification, but still having some element of progressivity and some element of fairness in the tax system?

WHITEHOUSE: Helping Small Businesses Grow and Create New Jobs

Now there is a real chance to make serious changes: to improve the voting system, to lessen the power of party hacks and to return an element of independence to individual MPs.

ECONOMIST: Letters