这些是不同类型的谷物。

These are different types of ___grains.

面包屑上还残留着几粒盐。

There were still a few ___grains of salt left on the breadcrumbs.

几粒沙子从指缝间漏了下来。

A few ___grains of sand slipped through my fingers.

古代药剂师会用天平精确称量每一味药材的重量。

Ancient apothecaries would weigh each herb to the precise ___grain using a balance scale.