A: What does the lividity indicate?
A：这些青紫说明什么？

B: It may help estimate the time of death.
B：这可能有助于推断死亡时间。

1) 医学上指血液停滞造成的皮肤变色

2) 法医学中用于判断死亡时间的现象

3) 表现为身体低位出现紫蓝色斑块

4) 与循环系统停止有关的生理变化

1. （医学）青紫；尸斑样变色

2. 皮肤因缺氧呈现的紫色变化

noun

1. a medical condition in which skin or tissue becomes bluish or purplish due to lack of oxygen or blood circulation, often used in forensic context.

Synonym: cyanosis, discoloration