供需的英文：
supply and demand

参考例句：

The laws of supply and demand do not apply here.
供需法则并不适用于此地。

When demand and supply are out of sync, you either increase the supply, or you adjust the price mechanism.
当供需失衡时，要么加大供给，要么调整价格机制。

supply是什么意思：
v. 供给，供应；补充
n. 供给，供应；供应量，供应品；生活用品；生活费
adv. 柔韧地

Demand exceeds supply. The supply is not adequate to the demand．
供不应求

Furnish a village with supplies/furnish supplies to a village
供应某村庄生活用品

air-supply register
空气供应记录器

The food supply is smart enough.
食物供给相当足够了。

To supply or enclose with rails or a rail.
用栏杆围提供栏杆或把栏杆围起来

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。