Due to technical issues, the captain announced we would be making an emergency landing.

landing 是动词 land 的动名词形式，land 本意是"着陆、降落"。 emergency landing 指飞机因突发状况（如机械故障、天气恶劣等）而不得不立即降落的情况，中文称为"紧急迫降"。