main reason

常见例句

That is the main reason why bond yields have risen with share prices.
这就是为什么债券收益与股票收益同步上扬的主要原因。
But the main reason they share there is to share, not to recommend the validity of a link in case someone searches for something similar.
但他们分享的主要原因只是因为他们想要分享，而不是想推荐这个正确的链接以确保不会有人搜索到相似的东西。
The main reason why a small but worrying proportion of families and young people is falling behind is that schools are failing to give them the skills they need to get and hold a job.
为什么那些数量虽小但让人忧心忡忡的家庭和年轻人落在了后面呢？其主要原因就是学校不能教给他们能够得到并维持一份工作的技能。

"I have lots of friends that came to U.S.C. That is the main reason I wanted to come.
I think the main reason is that there are no equations that involve the third derivative explicitly.
我想主要原因是因为还没有等式,明显涉及三阶导数
耶鲁公开课 - 基础物理课程节选
The main reason why I say that is actually not necessarily because of what's in the museum, but because of the museum itself.
我这样说，并不一定是因为博物馆里的东西，而主要是因为这个博物馆本身。
喜欢的艺术家 - SpeakingMax英语口语达人

The main reason is April is the second biggest month for inflows into stocks after January.
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Moreover, the emigrants' main reason for leaving--a lack of comparable career opportunities at home--remains unresolved.
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The main reason is that the writers have cleverly turned their conspiracy theories into a whodunnit.
ECONOMIST: A curiously compelling documentary about electric cars