白色背景上血溅成一条直线 Straight line of blood splattered across white background

一把刀或其他工具在白色表面上划过一道血迹，这是刚刚发生的恐怖谋杀的不祥征兆。

A single line of blood flicked across a white surface from a knife or other implement, an ominous sign of a horror murder that has just occurred.