tog·gle switch
noun/ˈtɒɡl swɪtʃ/
/ˈtɑːɡl swɪtʃ/
- an electrical switch that you move up and down or backwards and forwards
拨动开关；钮子开关 - (also toggle)(computing) a key on a computer that you press to change from one style or operation to another, and back again
转换键；切换键