To enter Class B airspace, such as an approach to a major metropolitan airport, an explicit ATC clearance is required.

需要持有明确的空中交通管制许可才能进入B类空域，如接近一个大都会机场。

youdao

Suppose you have a derived class D whose base class B has implemented some interfaces.

假设有个类型D，它的基类B实现了某些接口。

youdao

At some point, class B is created, and class a adds a reference to this newly created class.

在某个时候，类b被创建，类A添加对这个新创建的类的一个引用。

youdao

And forty percent thought they should get a B, the second highest mark, just because they did most of the reading for class.

VOA: special.2009.03.12

Usually what I want to talk about is what's the smallest size class in which this function grows? With all of that, what that says b is that this we would write is order b.

通常我们想要的是,方法增长时最贴切的描述,也就是说，在这个问题上,算法关于。

麻省理工公开课 - 计算机科学及编程导论课程节选

One thing I can guarantee from past experience in this class, is that the median grade will be a B+.

不过从教学经验看,中间成绩应该是B+

耶鲁公开课 - 博弈论课程节选

Threlfall, of Artle Place, Lancaster, was given 18 months for conspiracy to supply class B drugs.

BBC: Lancaster gang members who ruled using 'fear' jailed

For himself and other holders of Class B supervoting shares, he got a 54% markup.

FORBES: Taking Liberty

The largest owner of Class B stock is Lynn Alandt, a cousin of Bill Ford Jr.

FORBES: Ford Family Shuffles Wealth