意思是:向上向下(滑动)例句:

1、Press the updown buttons and set or adjusts the value of the mode you have selected.按压向上向下按钮,调整或设置被您选择模式的值。

2、Press the updown buttons to set the desired exposure compensation value.按压向上向下按钮,调准曝光补偿值。

3、Press the updown buttons to select ether preview or AE lock.按压向上向下按钮,以选择预对焦或AE锁定。