It can avoid the complication of indwelling t tube, decrease patients' pain and improve life quality.

它可避免放置T管引起的并发症，减轻病人的痛苦，提高生活质量。

youdao

If it's possible, use animals that don't feel pain, or use lower forms of life.

如果可以的话，请使用那些感觉不到疼痛的动物，或者用低级生物。

需要动物实验吗？ - SpeakingMax英语口语达人

But the fact is that standing in the field where my grandfather died doesn't make the pain of loss my mother has carried all her life any more meaningful.

BBC: News

Although his daily life isn't riddled with pain resulting from repeated pummeling, he is concerned about the long-term effects of the sport on his brain.

CNN: Former NFL player wants brain studied