When we shop online, we need pay for the commodities by electronic payments, but hackers can invade our computers and steal our information, this is not safe for online shopping.

当我们网上购物的时候，我们需要支付商品的电子支付，但黑客入侵我们的电脑和窃取我们的信息，这是对网上购物不安全。

Your text defines an electronic payment system as an alternative cash or credit payment method using various electronic technologies to pay for products and services in electronic commerce.

你的文字界定了电子支付系统作为一种替代现金或信用卡付款方式，运用各种电子技术，以支付产品和服务的电子商贸。

Even today, almost a year after truckers were supposed to pay their first electronic tolls, the system is still not up and running-a result of its complexity.

直到今天，在假定卡车司机已进行第一次电子缴费后的一年，这个系统还没有上马运行，主要的原因是因为太过复杂。