厨师在沙拉上撒了几粒米饭以增加口感。

The chef sprinkled a few ___grains of rice over the salad for texture.

新药以微小球丸形式出现，每个都不大于一粒米。

The new medication comes in tiny pellets, each no larger than a ___grain of rice.

古代文明依靠种植的谷物如小麦和小米来维持生计。

Ancient civilizations relied on cultivated ___grains such as wheat and millet for sustenance.