The list of eligibility criteria that a donor must meet is long, ranging from simple characteristics such as age and weight requirements to more complex ones surrounding medical and travel history.

血不是想献就能献的，冗长的献血者健康检查标准，从简单的年龄体重，到复杂的个人药物服用史和旅行史面面俱到。

youdao

This is as tax-efficient as America's federal donor system-but the paperwork is so complex that only 40% of donors bother with it.

这样的方法在税收方面和美国的捐款系统一样有效——但是涉及到的文书工作相当负责，使得只有40%的捐款人愿意这样做。

youdao

The resistivities of grain and grain boundary were measured by the method of complex impedance analysis, the deficit compensation mechanism of donor acceptor was analyzed.

采用复阻抗方法测量了晶粒、晶界电阻值，初步分析了施受主的缺陷补偿机制。

youdao

This is as tax-efficient as America's federal donor system but the paperwork is so complex that only 40% of donors bother with it.

ECONOMIST: Some easy ways for the government to encourage more giving

The transplant process involves the complex preparation of islets extracted from a deceased donor's pancreas.

BBC: Kathleen Duncan