The sheer volume of malware and the fact that criminal activity on the Internet knows no national borders make it almost impossible to effectively deal with malware threats.

单是大堆的恶意软件和罪犯活动于无国界的互联网上的实际情况，使有效处理恶意软件威胁变得几乎不可能。

youdao

"Global warming knows no borders, it does not discriminate, it affects us all and we are here today because we are all committed to take action,".

VOA: standard.2009.12.08