The parser is not required to provide a Locator object.

不需要语法分析器来提供Locator对象。

youdao

Often the standard will say a compiler may do something but is not required to.

标准通常会说编译器可以做某些事情但不强制这样去做。

youdao

Its use is optional, meaning that a resource adapter is not required to implement it.

它的使用是可选的，这意味着资源适配器不一定非得实现它。

youdao

The Food and Drug Administration is not required to follow the advice of its committees, but generally does.

VOA: special.2009.07.21

The agency is not required to follow the advice of its committees, but generally does.

VOA: special.2009.07.08

But if a trial is held, jurors are not required to decide "beyond a reasonable doubt.

VOA: special.2009.08.31

The company is not required to pay the student or even provide housing or transportation assistance.

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But leadership is not required to make a reform plan, only to implement it.

FORBES: Takenaka Heizo's Reform Plan

Lohan's case returns to court on Friday, although the actress is not required to attend.

WSJ: Lawyer says Lohan committed to turning life around