Buy in bulk. Certain things like rice, beans and grains are much cheaper when purchased in bulk.

批量购买。像大米，大豆，谷类食品常常会有更便宜的批发价。

youdao

Bulk dried foods such as legumes, flour, rice, etc. (typically available for self-service).

散装干如豆类，面粉，大米食品等(通常为自助服务提供)。

youdao

He bought rice in bulk.

他购买了大量稻米。

youdao

Often, they must spend half or more of their income on food, the bulk coming from staple grains like corn, wheat and rice.

CNN: Extreme heat and droughts -- a recipe for world food woes