hard landing
noun
1- a clumsy or rough landing of an aircraft（飞机的）硬着陆。
1.1
- an uncontrolled landing in which a spacecraft crashes on to the surface of a planet or moon and is destroyed（宇宙飞船的）硬着陆（指宇宙飞船在某一行星或月球上失控着陆坠毁）。