He's a major in the US army.
他是美国陆军少校。
Stress is a major problem of modern life.
压力是现代生活中的主要问题。
His first music teacher was a major influence in his life.
他的第一位音乐老师是他一生中对他影响非常大的人。
Tourism is a major source of income for the area.
旅游业是这个地区的主要收入来源。
Teachers are up against some major problems these days.
老师们最近面临着一些重大问题。