The scientists studied the eating habits of low-income families .

科学家研究了低收入家庭的饮食习惯。

The researchers studied cement from manufacturers around the world .

研究员们从世界各地水泥制造商那里研究水泥。

For two years anne studied hard at school .

安妮在学校里刻苦学习了两年。

I 'm interested in the experience of those who have studied chinese for a while .

我对那些学了一段时间汉语的人的经历很感兴趣。

His niece studied civil engineering at the university of southern california .

他的侄女就读于美国南加州大学土工程系。