血流成河的英文：
1.blood flowed and has become a river

参考例句：

The battlefield flowed with rivers of blood.
战场上血流成河。

And if a civil war broke out, with blood flowing like a river, what ``human rights'' would there be?
一打内战就是血流成河，还谈何“人权”

blood是什么意思：
n. 血，血统
v. 从...抽血

blood cholinesterase
血液胆碱脂酶

Change venous blood into arterial blood.
把静脉血转化为动脉血。

The affluence of blood to the heart through the blood vessels.
血液经血管流入心脏。

flowed是什么意思：
v. 流动；源自，来自
n. 流；流动；流畅；连贯；大量

Exercise stimulates the flow of blood.
锻炼促进血液循环。

free flowing contour
自然起伏的地形

The flow of fluid is steady.
液体的流动很稳定。

become是什么意思：
v. 成为；变得；适合；相称

To become blunt.
变钝，变迟钝

To become inflated.
膨胀变得充了气的。

To become firm or gelatinous; congeal.
凝固凝结或变硬；冻结