pretransplant的用法和样例：
例句
- In order to maximize the utility of organ allocation a system that balances both pretransplant medical urgency and posttransplant survival is needed.
为使器官分配的利益最大化，需要有一项系统用于平衡移植前急症和移植后生存率。 - Refinements are being studied in improving the prediction of mortality and improving transplant benefit by balancing pretransplant mortality and posttransplant survival.
正在研究改进的方法来提高死亡率的预测以及通过平衡移植前死亡率和移植后存活率而改善移植的效果。
