We have increased the number of teachers but the size of the classes hasn't changed proportionately.

我们已增加了教师的数量，但班级的大小并没有成比例地改变。

《柯林斯英汉双解大词典》

The number of such classes will increase over time.

随着时间延续，这样的类的数目会越来越多。

youdao

Efferent coupling measures the number of classes the current class references.

传出耦合度量当前类引用的类的数量。

youdao

The first lady said the plan also includes increasing the number of high school students who take part in physical education classes.

VOA: special.2010.06.07

which is basically an extensive number of classes that everybody has to take if you're in Columbia College,

基本包含了大量的课，而且每个哥伦比亚的学生都要上，

哥伦比亚大学的教程 - SpeakingMax英语口语达人

You begin with three classes and a number of other classes are available to unlock either through in-game experience points (earned during matches) or by paying cash.

FORBES: Move up http://i.forbesimg.com t Move down

The game features a number of classes, all of which can be upgraded to advanced classes at level 10, giving you a wide variety of class and skill options that affect movement, attack, and special powers, as well as defense stats.

FORBES: 'Fire Emblem: Awakening' Review (3DS)

In Chad, first year classes number an average of 85 students.

UNESCO: MEDIA SERVICES