This story was originally featured on Fortune.com
志愿者的无偿服务，对医院来说，是实实在在的“成本利器”。虽然具体财务数据未公开，但我们可以通过服务时间，大致算出它的价值：
。关于这个话题，爱思助手下载最新版本提供了深入分析
Трамп высказался о непростом решении по Ирану09:14
These AR/XR glasses have a huge price advantage over their rivals.
Claudia Kenyatta CBE and Emma Squire CBE, co-CEOs of Historic England, said it was a "remarkable discovery".