血跡的用法和樣例：
例句
-
醫生用顯微鏡作了血跡檢查。
The doctor had a microscopic examination of traces of blood. -
那隻狗的毛皮上沾有血跡。
The dog's fur was matted with blood. -
難道醫生就不應該將殺人者傑克（殘害婦女的兇犯）送交警察，律師就不應該拒絕掩蓋血跡斑斑的罪證，出來指證他的當事人是殘害他人的兇手嗎？
Is there not a point where a doctor should hand Jack the Ripper over to the police and a lawyer refuse to suppress the bloodstained evidence that proves his client a torturer?
