A：Do you know what E-commerce is?
你知道什么是电子商务?
B：Well, I'm not sure. Maybe it means we can buy something through the Internet.
我不确定，也许是网上购物吧.
A：That's right
你说对了。
B：It must be very convenient and pretty quick.
一定很方便又相当快捷。
A：Sure, but you must have access to the Internet.
当然了但你必须能够连接到互联网上才行。