活血的英文：
to simulate the circulation of blood; to facilitate the flow of blood

参考例句：

Promote coronary arteries circulation to remove obstruction in the heart-vessels
活血通络

Promote blood circulation to relieve pain
活血止痛

Supplement qi and activate blood circulation
益气活血

Having a specially good effect for promoting blood circulation to relieve pain, this salve is a traditional drug.
本膏药系传统伤药，活血止痛有特效。

When the handcuffs came off, he rubbed his wrists to restore circulation.
手铐脱下后，他搓搓手腕活活血。

simulate是什么意思：
v. 假装，模仿，模拟

This is a bad simulation.
这是一次拙劣的模仿。

The simulation demonstrates the validness of the analysis.
仿真结果验证了理论分析的有效性。

On dynamic flight simulator,mismatch impacts mostly effect of simulation.
动态飞行仿真中错配主要影响仿真效果。

circulation是什么意思：
n. 血液循环；流通，传播；发行量

Have you been circulated with details of the conference?
你收到会议详情的通知了吗？

circulate counterfeit coins
使伪造的钱币流通

This magazine has a large circulation.
这本杂志发行量很大。

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。