1·My main reason for subscribing to New Scientist is to keep abreast of advances in science.
我订阅《新科学家》的主要原因是要跟上科学的进步。
—— 《柯林斯英汉双解大词典》
2·Human activity is the main reason for this, the United Nations (UN) said.
联合国表示，人类活动是造成这一现象的主要原因。
3·The main reason why this place is so important to me is my grandmother.
这个地方对我如此重要的主要原因是我的祖母。
4·One main reason is that they always have technology products in their hands or around them.
一个主要原因是，他们的手中或周围总是有技术产品。
5·I think the main reason is that parents and children seldom have a talk with each other.
我认为主要原因是父母和孩子交谈太少。
6·The main reason for using 11 digits is that we have the largest population in the world.
使用11位数字的主要原因是我们拥有世界上最多的人口。
7·Haters say the noise caused by square dancing is the main reason why they are against it.
反对者称广场舞带来的噪音是他们反对广场舞的主要原因。
8·Killing time is the main reason for me to watch the short videos, but many are almost the same, so I think it is a waste of time.
对我来说，看短视频的主要原因是消磨时间，但它们大多数几乎都一样，所以我觉得这是浪费时间。
9·Parents and schools are a main reason.
家长和学校是主要原因。
10·It could be the main reason for my improvement in French.
这可能是我法语进步的主要原因。