/ˈkwɒntɪtɪ/
[C, U] an amount or a number of sth 数量；数额；数目
a large/small quantity of sth
大量／少量的某物
enormous/vast/huge quantities of food
大量的食物
a product that is cheap to produce in large quantities
可以低成本大批生产的产品
Is it available in sufficient quantity?
这东西能不能足量供应？