The air flow can be used to gain height but don't touch the fan.

可通过其气流来升高，但是不要触及它的风扇。

youdao

Without stirrups horse and rider are, in terms of force, separate entities; lances can be used from horseback, but only by throwing or stabbing, and mounted warriors gain only height and mobility.

没有马镫，马和骑手在力量上是独立的实体；长枪可以从马背上使用，但只能通过投掷或刺杀，骑兵只能获得高度和机动性。

youdao

The crash happened shortly after take-off when the plane was unable to gain enough height to clear the mountains.

飞机起飞后不久就坠毁了，因为飞机无法上升到足够的高度飞越群山。

youdao

In the Albula Valley the track spirals to gain height, and around the austere grandeur of the Bernina Pass becomes one of the world's steepest narrow-gauge railways.

BBC: Swiss movement

If left to proceed unchecked, it could mean that growth is stunted as the body receives chemical signals telling it to switch off further height gain.

BBC: NEWS | Health | Gene 'decides timing of puberty'

The findings highlight the importance of monitoring a baby's weight and height gain during the first few weeks and months, but not creating anxiety with parents of slow-growing babies, said study leader Prof Alan Emond from the University of Bristol.

BBC: Slow-growing babies 'catch-up' by teens