astrain

astrain

美 　英

• 网络菌株；一种系；应变大小

例句

While blood is being donated you should keep your veins astrain. This is achieved by kneading an expander in both of your hands.

当献血的时候，你应当保持你的经脉扩张，这可以通过揉捏手里的扩张器达到。