1
be on dialysis
表示“接受透析治疗”时常用 be on dialysis，介词 on 引出治疗方式。
He has been on dialysis for three years.
他已经做透析三年了。
透析；渗析
先理解核心含义，再看它在真实句子里的用法。
透析；渗析
the separation of substances in a solution by their different rates of diffusion through a semipermeable membrane
He has been on dialysis for three years.
他已经做透析三年了。
通过半透膜的差异扩散分离不同大小分子或颗粒的方法。
A method of separating molecules or particles of different sizes by differential diffusion through a semipermeable membrane.
利用半透膜对不同物质的不等扩散分离溶液中的物质。
separation of substances in solution by means of their unequal diffusion through semipermeable membranes
在肾衰竭时使用该法清除血液中的废物,即血液透析或腹膜透析。
The use of this method for the removal of waste products from the blood in the case of kidney failure: hemodialysis or peritoneal dialysis.
After his kidneys failed, he had to go to the hospital three times a week for dialysis.
他肾脏衰竭后，每周必须去医院做三次透析。
In chemistry class, we used dialysis to separate the small molecules from the large ones in the mixture.
化学课上，我们用渗析法把混合物中的小分子和大分子分开。
The doctor explained that dialysis could help clean the patient's blood when the kidneys no longer worked.
医生解释说，当肾脏不再工作时，透析可以帮助清洁病人的血液。
表示“接受透析治疗”时常用 be on dialysis，介词 on 引出治疗方式。
He has been on dialysis for three years.
他已经做透析三年了。
undergo 常与 dialysis 搭配，表示接受透析这一医疗程序。
The patient will undergo dialysis twice a week.
这位病人将每周接受两次透析。
用 for 说明需要透析的疾病或情况，是 dialysis 常见的名词修饰结构。
Dialysis for kidney failure can be life-saving.
针对肾衰竭的透析可以挽救生命。
描述透析功能时，dialysis 作主语，谓语动词用第三人称单数。
Dialysis removes waste products from the blood.
透析清除血液中的代谢废物。
Not this
The patient is in dialysis.
Use this
The patient is on dialysis.
英语表示“正在接受透析治疗”时用固定搭配 be on dialysis，介词是 on；中文按字面译为“在……中”常误用 in，属于母语迁移错误。
Not this
He goes for a dialysis three times a week.
Use this
He goes for dialysis three times a week.
dialysis 表示“透析治疗”时是不可数名词，前面不加 a/an；若要说“一次透析”，应说 a dialysis session 或 a dialysis treatment。
Not this
The technician performed three dialysises.
Use this
The technician performed three dialyses.
以 -sis 结尾的名词构成复数时要把 -sis 改为 -ses，如 analysis→analyses，dialysis→dialyses；不能按规则直接加 -es 写成 dialysises。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
腹膜透析
The doctor recommended peritoneal dialysis for her condition.
医生建议她进行腹膜透析。
透析治疗
He goes to the clinic three times a week for dialysis treatment.
他每周去诊所三次接受透析治疗。
透析机
The dialysis machine filters the patient's blood.
透析机过滤病人的血液。
透析患者
Each dialysis patient has a specific treatment schedule.
每位透析患者都有特定的治疗时间表。
接受透析
She has to undergo dialysis while waiting for a kidney transplant.
她在等待肾移植期间必须接受透析。
肾透析
Renal dialysis is essential for patients with kidney failure.
肾透析对肾衰竭患者至关重要。
Use dialysis naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
透析（dialysis）犹如血液穿过半透膜‘洗’掉废物，记住‘dia’穿过、‘lysis’分解。
语域：mixed 常见场景：医学：肾功能替代治疗、化学实验室：半透膜分离 dialysis 的语域随场合变化：在医学中作为常规治疗名称，患者和医生交流时较常见；在化学/生物等学术语境中则是专业术语，多用于书面或正式报告。整体不属于随意口语，建议在专业或正式场合使用。
dialyses
Dictionary facts from ECDICT, WIKTIONARY.