In 1901, Austrian Physician Karl Landsteiner discovered blood types and we now can type blood based the antigens on the blood cell.

在1901年，奥地利内科医生 Karl Landsteiner 发现血型和分类血型是基于血细胞的抗原。

It wasn't until 1901 that Austrian physician Karl Landsteiner discovered blood types, the crucial step in the success of human-to-human blood transfusions.

直到 1901 年，奥地利物理学家卡尔·兰德施泰纳发现了血型，这是人类之间输血成功的关键一步。