Three quick notes about this passage. 外卖小哥 is a very native way to say “delivery driver” in Chinese. It refers to delivery drivers who generally ride electric bikes and deliver food.
APP (reading each letter individually, A.P.P) is generally how Chinese people will refer to apps on their phone.
美团外卖 and 饿了么 are both apps that allow you to order food in China.
珊珊：XiaoMing, I’m so tired. I don’t want to go out to eat.
小明：Then you can order takeaway.
珊珊：What is takeaway? How can I order it?
小明：Takeaway involves the restaurant you choose sending the food you want to you via the delivery driver. You don’t need to go out to enjoy delicious food.
珊珊：What is a delivery driver?
小明：Someone who delivers takeaway is called a delivery driver.
珊珊：So how do I order?
小明：You can download an app on your phone. MeiTuan Takeaway or Hungry? are both convenient. Then choose the food you want from the list and it will be delivered to your door.
珊珊：How can I pay?
小明：You can attach your Wechat app and use that to pay. Or you can use a bank card.
珊珊：Ok! I will definitely try it，It sounds pretty good!