Walsh fumbled in his pocket, a reflex from his smoking days.

沃尔什在口袋里摸索着，这是他抽烟时养成的习惯动作。

I turned to look inside the house in a reflex action.

我习惯性地转过身往房子里看了看。

...tests for reflexes, like tapping the knee or the heel with a rubber hammer.

如用橡胶槌敲击膝盖或脚跟那样的反射性动作测试

...the stress hormone adrenaline, released by reflex action from the adrenal glands.

肾上腺条件反射释放出来的应激荷尔蒙肾上腺素

It takes great skill, cool nerves and the reflexes of an athlete.

那需要运动员有高超的技巧、冷静的头脑和迅速的反应能力。