减轻疼痛的英文：
reduce pain

参考例句：

There pills will allay pain.
这药丸可以减轻疼痛。

Beta-blockers alleviate pain and slow the heart rate.
β阻断剂能够减轻疼痛，降低心跳速率。

Pain that never eased.
从未减轻的疼痛

A cold compress often alleviates pain.
冷敷常会减轻疼痛。

She took drugs to dull the pain.
她吃了药以减轻疼痛.

Put mud on the sting to take away the pain.
放泥在刺痛处可以减轻疼痛。

Besides this, he knew sometimes hemp was used to alleviate pain.
除此，他还知道有时候大麻用来减轻疼痛。

Antacids are alkaline and they relieve pain by neutralizing acid in the contents of the stomach.
抗酸剂是碱性的，通过中和胃容物中的酸来减轻疼痛。

reduce是什么意思：
v. 缩减，减小；简化；将…还原；节食；降职

be reduced to (a) pulp
变成浆状,成纸浆 [软块]

They held a sale to reduce their inventory.
他们降价出售库存货物。

To reduce in rank;demote.
使降职，使…降级

His hope was reduced to zero.
他的希望化为乌有。

To reduce in rank or rating;demote.
使降级降低级别或降级；使人降级

pain是什么意思：
n. 疼痛；痛苦
v. 使痛苦；引起疼痛，感到疼痛

This is a painful task.
这是一份不愉快的差事。

a painful task.
费力的工作

No pains, no gains.
不劳则无获。

The pain of the mind is worse than the pain of the Body
心头的痛苦比肉体的痛苦更厉害

The woman is undergoing the joyful pain and painful joy of childbirth.
那位妇女正在经受生育时喜悦的痛苦和痛苦的喜悦。