英语语法分析

It concluded that the patients given Trasylol were at greater risk.

得出结论是，使用特拉·西罗的患者承受的风险更大。

Trasylol, also known as aprotinin, has been on the market for 13 years.

又名为抑肽酶的特拉·西罗，已经上市13年。

Doctors give Trasylol to patients before surgery to reduce the risks of blood loss.

医生在开刀前给患者使用该药来减少出血的风险。