To change language of the environment use the following command:
Sys.setenv("LANGUAGE"="En")
To change locale to English:
Sys.setlocale("LC_ALL", "English")
The name of the locale depends on what is installed on your system (for example, you might use "en_GB.UTF-8" instead of "English").
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…