YOU SAID:
WordPress is the world's most popular blog/CMS solution. WordPress' popularity has stemmed in large part from its ease of use and ability to be customized with an extensive plugin system.
INTO JAPANESE
WordPressは、世界で最も人気のあるブログ/ CMSソリューションです。 WordPressの人気の大部分は、その使いやすさと、広範なプラグインシステムでカスタマイズできることに起因しています。
BACK INTO ENGLISH
WordPress is the world's most popular blog / CMS solution. Much of WordPress's popularity stems from its ease of use and its ability to be customized with an extensive plugin system.
INTO JAPANESE
WordPressは、世界で最も人気のあるブログ/ CMSソリューションです。 WordPressの人気の多くは、その使いやすさと、広範なプラグインシステムでカスタマイズできることに起因しています。
BACK INTO ENGLISH
WordPress is the world's most popular blog / CMS solution. Much of WordPress's popularity stems from its ease of use and its ability to be customized with an extensive plugin system.
That didn't even make that much sense in English.