It was a major reason for the fast growth of the electronics and communications industries in the early part of the twentieth century.

VOA: special.2010.01.31

We can call them triads and we'll be talking about what that is before-- so that's one reason: major versus minor.

我们可以统称为三和弦,我们一会儿会说到,好的,这是一个答案,大和弦和小和弦

耶鲁公开课 - 聆听音乐课程节选

A major reason is prematurity the death rates are among the highest in the world.

VOA: special.2009.05.25

Falls are a leading cause of death for older adults and also a major reason they enter a nursing home.

VOA: standard.2010.02.26

He says neither side expects a major shift in relations, but the White House does have reason for concern.

VOA: standard.2009.11.12