n.定额；定量；配给
vt.限量供应；配给
Ration is widely used in manufacturing industry. 定额是制造业中广泛使用的一个概念。
Have you used your ration of petrol for this week? 你用了这星期给你定量的汽油了吗?
The country cut the bread ration last year. 那个国家去年削减面包配给量。
用作及物动词 (vt.)They had to ration petrol during the war. 战时他们不得不限量供给汽油。
We were rationed to two eggs a week. 每周配给我们两个鸡蛋。
operation的复数形式
n.准备，准备工作，配制剂（名词preparation的复数形式）
n.世代
