英语语法分析

Before transplantation, the graft is thawed and rehydrated.

移植前，移植物的解冻和再水化。

It also was being rehydrated with fluids through a tube in its stomach every four hours.

每四个小时研究员就通过管子输送液体到鲸的胃中，对它进行再水化。

This study was aimed to investigate the aggregation of rehydrated-lyophilized platelets.

本研究旨在观察冻干血小板再水化后聚集反应性变化。