staple

The main food regularly consumed by a person or group.

A basic or principal food in a region's diet.

订书机

A handheld machine that drives heavy metal staples into hard surfaces.

一种将重金属钉钉入硬表面的手持机器。

主要作物

The most important crop grown in a region, often for food.

一个地区种植的最重要的作物，通常用作食物。

家常便饭

The typical food offered at a place or for an occasion.

在某个地方或场合提供的典型食物。