grain/greɪn/

n.

➊ a seed or seeds of crops such as corn, wheat or rice

➋ a small hard piece of sth

n.

➊ [U; C] 谷物；谷粒：a bag of grain 一袋谷子

➋ [C] 颗粒：[a grain of sth] a grain of salt/sand 一粒盐/沙

◇a few grains of rice 几粒大米

音组-ain/-eɪn/

brain; grain; pain; plain; rain; train

用法用作不可数名词时，统指“谷物”；用作可数时，指谷物的种类或谷粒。