Or in other words, before the first call is made to the UDF an object of the class is created and kept until after the last call.

或者，换句话说，在第一次调用udf之前，就创建该类的一个对象，并且一直保留到最后一次调用这个UDF之后。

youdao

The extension after the dot names the class; the tag before the dot specifies which tag is associated with the class.

点号后面的扩展指定类名；点号前面的标记名指定与这个类相关联的标记。

youdao

A class invariant must hold before and after all method calls (once the object is constructed).

类在方法调用之前和之后必须保持不变(一旦对象已经构建)。

youdao

So Mara's going to be the person who will see you after class and she will take the problem sets that you have submitted before class and she'll give you the graded ones after class.

玛拉将是你们的课后辅导老师,她会批改你们上课前交给她的作业,课后她会将批改后的作业发还给你们

耶鲁公开课 - 基础物理课程节选

I used to... you know, I lived and worked out of Sloane Lab up on the hill and it was easy to have office hours before or after class but now you have to make a special trip.

我以前...,我以前的工作和住的地方都是斯隆实验室外的,小山上,那时的开放时间设在课前或课后对我来说都很方便,但是现在你们就得费点儿周折了

耶鲁公开课 - 基础物理课程节选

On Mondays, Aron never gave any sign that he had formed a connection with either of them, never spoke to them before or after class, hardly even looked at them.

NEWYORKER: Luda and Milena

We put them on an education assembly line every day, starting with one station that teaches them a certain subject before automatically moving them to the next class after a certain period of time.

FORBES: Rethinking Education: Why Our Education System Is Ripe For Disruption

We started with surveys of each school's class of 1994, asking students to disclose (anonymously) their compensation just before matriculating, after graduation and four and a half years later.

FORBES: The Bottom Line on B-Schools