Fēijī de shēngjiàng guòchéng shì zuì wēixiǎn de jiēduàn.
The takeoff and landing process is the most dangerous phase of flight.
Tips
usage
升降 is often used as an attributive compound: 升降机 (elevator/lift), 升降台 (lifting platform), 升降舵 (elevator control surface on aircraft). It describes the dual action of going up and coming down.
