延缓的英文：
defer
stay

参考例句：

The government decided to suspend introduction of the new scheme.
政府决定延缓采用新方案。

Calcium apparently acts in a similar manner as some of the hormones that defer senescence.
钙这种明显的作用同某些激素能够延缓衰老的作用方式相似。

Delay the process of decrepitude
延缓衰老

Set back; delay
延缓;耽搁

Delay senility
延缓衰老

Delay the process of aging
延缓衰老

The bank call for a moratorium on payment.
银行要求延缓付款。

Put off; postpone
拖延;延缓;开行

Bad weather accounted for the long delay.
长期的延缓是因为坏天气

Stay(ie delay)punishment/judgement
延缓惩罚[审判]

defer是什么意思：
v. （使）推迟；服从

She has deferred too long.
她拖延得太久了。

Doctors are encouraged to defer to experts.
鼓励医生听从专家的意见。

He showed deference to his coach.
他尊重教练。

Some structured it as a loan and deferred repayment.
一些人把它作为一笔贷款和延期还款。

I defer to your advice in these matters.
在这些事情上，我听从你的忠告。

stay是什么意思：
n. 停留，制止，依靠，支柱
v. 制止，平息，延缓，继续，保持，坚持，忍耐

stationary stay
中心架|固定支柱

Settle down or stay, as if on a roost.
安歇或暂住，好像在栖息所。

He was stayed by the doctor.
他被医生制止了。

I stayed to the end of the race.
我坚持跑完了全程。

These houses stayed up in the quake.
这些房子在地震中没有倒塌。