Otherwise, I would never have known that E-learning, Open Distance Education; and Web Based Training (WBT) all mean essentially the same thing!是什么意思_Otherwise, I would never have known that E-learning, Open Distance Education; and Web Based Training (WBT) all mean essentially the same thing!在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句