需求收入弹性的英文：
income elasticity of demand
n. 收入；收益；所得
IQC Incoming quality control
来料检验
Incoming fire has the right of way.
飞来的子弹有优先通行权。（挡它的道你就要倒大楣！）
He has a comfortable income.
他有充裕的收入。
n. 弹性，弹力；灵活性，伸缩性
elastic resilience
弹性回能|弹能
Rubber is elastic.
橡皮是有弹性的。
This plan is fairly elastic.
这个计划有相当的灵活性。
n. 要求，所需之物；需求，需要
v. 要求；询问，质问；命令；需要
It is the demand, stupid.
傻瓜，答案是需求。
Demand exceeds supply. The supply is not adequate to the demand．
供不应求
I demand a recount.
我要求重算。