求翻译：1999年已经有人开始研究E-learning的企业应用； 2001年国外在线学习公司开始进入中国 2002年开始，很多中国大型的金融、通讯企业开始采用在线学习是什么意思？

1999 has been started to study e-learning enterprise applications; online learning abroad in 2001 the company began to enter China in 2002, many large financial, telecommunications companies began to use the online learning

In 1999 it was started to study E - learning enterprise applications; 2001 foreign online learning company in China began in 2002, a lot of Chinese large financial, telecommunications companies began to use online learning

In 1999 already some people started to study E-learning the enterprise application; In 2001 the overseas online study company started to enter China in 2002 to start, the very many Chinese large-scale finance, the communication enterprise started to use the online study

In 1999 have been started working on E-learning enterprise applications; 2001 online learning company entering China abroad beginning in 2002, many large financial, communications companies began using online learning

正在翻译，请等待...