So to obtain a class we must provide an ADT and decide on an implementation.

因此，要获得一个类，我们必须提供一个ADT并决定一个实现。

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In this paper we give a criterion of uniqueness of solutions to two-point boundary value problem: moreover, we obtain a class of existence uniqueness theorems of solutions.

本文给出了两点边值问题的解具有唯一性的一个判别法则，并在此基础上给出一类解的存在唯一性定理。

youdao

I mentioned earlier that the TypeDescriptor class is a utility class that is used to obtain information about a type's properties, attributes, and events.

我在前面提到过，TypeDescriptor类是一个实用性的类，它用于获得有关类型的属性、特性和事件的信息。

youdao

Erichson said the court will be forced to decide the circumstances under which courts can use class actions formed under a rule designed to allow large numbers of plaintiffs to obtain injunctive relief, or court-ordered changes in the way an organization operates.

FORBES: Supreme Court Takes On Massive Wal-Mart Discrimination Case