需求疲软的英文：
weak demand

weak是什么意思：
adj. 疲软的；虚弱的；软弱的；愚钝的；不牢固的；淡薄的

a weak radio signal; a weak link.
微弱的无线电信号；薄弱的连接。

He has weak eyes.
她的视力不佳。

The spirit is willing But the flesh is weak
力不从心。

Alternate weakness with severity
恩威并济

There is an inherent weakness in the design.
这设计本身存在弱点。

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。

The help are demanding higher wages.
雇工们要求增加工钱。

He made an inexorable demand.
他提出一个无情的要求。