It has a set of built-in classes for String, Integer, etc.

它有一组用于String、Integer等等的内置类。

youdao

The trainers conducted weekly classes in the center built for the purpose.

教员们每周在手语培训中心教一次课。

youdao

The package android.provider defines classes and interfaces that allow applications to read many built-in Android databases.

provider 包定义一些允许应用程序读取大量内置 Android 数据库的类和接口。

youdao

Four days a week, Mr. Katechis has a personal trainer teach boot camp-style classes at the company gym he had built next to the brewery in 2008.

WSJ: Dale Katechis of Oskar Blues Brewery Mixes Exercise With Beer