反射弧的英文：
reflex arc
n. 反射，反映；回复；习惯性思维
adj. 反射的；反作用的
- reflexive pronoun
ph.1. 【语】反身代词(如 - It is used as a reflexive.
它被作为反身代词使用。 - Myself is a reflexive pronoun.
Myself是反身代词。 - Driving today demands lightning reflexes.
如今开车需要反应极其迅速。 - Contemplation becomes reflexive, like breathing.
沉思也变得是反射性的，就像呼吸。
n. 弧（度）；弧形物；天穹；弧光
v. 形成拱状物；形成电弧；走弧线
- piercing by electric arc
电弧穿孔 - The beach swept around in an arc.
海滩呈弧形伸展开来。 - The secant of the complement of a directed angle or arc.
余割有向角的余角或弧的余割 - An electric arc is struck by contacting the electrodes.
接触电极便击出电弧。 - A rainbow arced gracefully over the town.
彩虹在小城上空画出了一道优美的弧线。