减缓的英文：
to slow down
to retard

参考例句：

To mitigate the effects of; absorb the shock of
减缓…的后果;吸收…的冲击

The slump in global manufacturing seems to be easing.
全球制造业的衰退似乎也正在减缓。

This soup will help you to ward off hunger for a time.
这汤能帮你减缓一下饥饿。

This charm will slow down and obstruct attackers.
这个咒语将减缓攻击者的速度并阻止他们。

He tried to mollify his father's anger by apologize.
他企图以认错来减缓他父亲的怒气。

He tried to mollify his father's anger by apologizing
他企图以认错来减缓他父亲的怒气。

Laugh to reduce your stress and tension.
微笑能减缓你的压力和紧张情绪。

The construction of the building will slow when the rain season sets in.
雨季到来时，大楼建设工程将减缓下来。

A drug that reduces nervous tension;a tranquilizer.
镇定剂用以减缓神经紧张状态的药物;镇定药

He tried to mollify his father's anger by apologize.
他企图以认错来减缓他父亲的怒气。

slow是什么意思：
adj. 慢的，费时间的，迟缓的，减速的；迟钝的；不景气的，沉闷的
adv. 缓慢地
v. （使）慢下来；阻碍；变萧条

Be slow to promise and quick to perform
不轻诺,诺必果

Slow and steady wins the race
跛鳖千里

The twisting and moving slowed down.
旋转和转动的速度降了下来。

down是什么意思：
prep. 在…下，沿着
v. 下降，打倒
n. 潦倒；羽绒；丘陵

Down with hegemonism!
打倒霸权主义！

The sun is down.
太阳下山了。

Close down autos and you close down steel and rubber.
关掉了汽车工业你也就关掉了钢铁工业和橡胶工业。

retard是什么意思：
v. （使）减速；妨碍
n. 笨蛋

retard thespark,eg of an engine
使点火延迟（如发动机的）.

retard the mechanism,eg of a clock
使机械装置减速（如时钟的）

Her sister works in a school for the retarded and handicapped.
她的姐姐在一所弱智和残疾人学校工作。