Yams, which are a sort of sweet potato, abounded ready cooked.

山药是一种甘薯， 现成的食物很多。

They seem to live on ready cooked meals.

【ready】他们好像就吃方便餐过日子。

They first stop at a board where the menu is displayed give an order through a microphone and then drive another twenty yards, where a girl hands them the meal ready cooked and packet.

他们首先停在显示菜单的一块板上，通过麦克风下达命令，然后再行驶二十码，一个女孩将准备好的饭菜和包装交给他们。