How did I come into this world?

Daddy? How did I come into this world?"

"Well, my child, someday I'll have to tell you anyway."

"So why not today? Please!"

"OK, but listen carefully."

"Mom and Dad met each other in a cybercafe. In the restrooms of that cybercafe, dad connected to mom. Mom at that time made some downloads from dad's memorystick. When dad finished up（完成，结束） loading wed is covered we used no firewall. Since it was too late to cancel or delete, nine months later we ended up with（结束，告终） a virus."