献血者

It is important in transfusions that both donors and recipients have the same types.

在输血时，确保献血者和接受血液的人都是这种血型，这很重要。

But just in case there is not enough by the time of the Olympics, the Red Cross says it has a registry of 400 Rh-negative donors who can be called upon to donate in case of an emergency.

但是万一到奥运会时还没有足够的血液，红十字会说，它有400名Rh阴性血的献血者的登记，发生紧急情况的时候可以叫这些人献血。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。