This is using the R class that the Android SDK generates for us to represent resources, such as the arrays.xml file.

这是使用 Android SDK 生成的 R 类表示资源，例如 arrays.xml 文件。

youdao

Should you find the .r transformation method on strings unclear, you can also define regexes by creating new instances of the Regex class, as in: new Regex("""W""").

如果你觉得字符串的.r 转换方法不是很清晰，你也可以通过创建Regex 类的实例来定义正则表达式，比如new Regex("""W""")。

youdao

The new carrier is both named the Gerald R. Ford and is the first Gerald R. Ford class of aircraft carrier.

新的载体，既是名为杰拉尔德福特和是第一杰拉尔德福特级航空母舰。

youdao

Sales of the R-Class have been sluggish ever since its introduction for the 2006 model year.

FORBES: 2012 Mercedes-Benz R350 Bluetec 4Matic

Besides the usual hatchback, sedan and SUV, car shoppers today can consider yet-to-be-categorized cars such as the Mazda5, a micro-minivan, or Mercedes-Benz's R-Class, a maxi-station wagon.

CNN: Car shopping 2006: The inside track

Some are being discontinued because they flopped in the market, like the Maybach ultra-luxury sedan, the Mercedes-Benz R-class or the Lexus HS250h, a pricey hybrid that fell short in terms of fuel efficiency, luxury and functionality.

FORBES: Last Call For These Cars That Will Soon Be History