感觉到的需求曲线的英文：
perceived demand curve

perceived是什么意思：
v.[T]
1. 意识到，注意到，观察到（某人、某事物）
2. 理解或领悟某事物；认为

To perceive (oneself) to be in a specific place or condition.
使（自己）认识到所处的特定位置或情况。

She is perceived as vain, spoilt and promiscuous.
她被认为是个被人惯坏了的、既虚荣又淫乱的女人。

Such magazines are often perceived as being superficial.
这类杂志经常被认为很肤浅。

demand是什么意思：
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。

curve是什么意思：
n. 曲线，弧线，曲面，弯曲；曲线球
v.（使）沿曲线运动

Joining Convex (Outer) Curves to Concave (Inner) Curves
缝合凸出的弯曲部位和凹曲部位

The road curved sharply to the right.
道路有个急转弯拐向右边。

To bend or curve downward;stoop.
弯向下弯曲；俯曲