The biggest problem lingering problem is the electricity sector - widely recognized to be a disaster despite massive amounts of money injected by the US and Iraq.

最严重的、最阴魂不散的问题是电力——尽管美国和伊拉克投入大量资金，电力还是被广泛认为为一个灾难。

Information security problem is one of the key problems in modern Internet. by active defending feature intrusion detection technology is widely recognized and applied.

在信息安全问题日益突出的互联网中，入侵检测技术以其主动防御的特性，得到越来越广泛的重视和应用。

It is now widely recognized that the current domestic violence crime has become a hot focus and difficult problem, its serious social harm has reached an unprecedented level.

人们已普遍认识到，家庭暴力犯罪已成为当前社会的热点、焦点和难点问题，其社会危害性已达到了空前的严重程度。

"Although lead poisoning of children is widely recognized as a major public health problem, too little attention is being given to correcting the problem in many parts of the world," says Clark.

Clark说，尽管儿童的铅中毒已经被广泛的认为是一个主要的公共健康问题，世界上的许多地方很少关注去纠正这一问题。