examination of seminal stain

例句：

1. 1. The doctor performed an examination of the patient's blood work.
   医生对病人的血液样本进行了检查。
2. 2. The committee conducted an examination of the company's financial records.
   委员会对公司的财务记录进行了审查。
3. 3. The scientist examined the sample under a microscope to determine its composition.
   科学家用显微镜检查了样本，以确定其成分。