protohippus

原───primary;马───horse

always women who are the primary carers.───一直由妇女做主要的看护人。

In Sierra Leone, English is used as the medium of instruction for all primary education.───在塞拉利昂，基础教育阶段全部用英语授课。

It is not the primary tumour that kills, but secondary growths elsewhere in the body.───原发性肿瘤并不会置人于死地，致命的是身体其他部位的继发肿瘤。

That's the primary reason the company's share price has held up so well.───这是公司股票价格一直居高不下的主要原因。

I don't think young people's primary aim in life is to get drunk.───我觉得年轻人生活的主要目标并不是一醉方休。

We turn now to our primary question.───我们现在转到我们的主要问题上。

Computers are now commonplace in primary classrooms.───计算机如今在小学教室里很普遍。

Mrs Steele was head of Didcot's C of E primary school.───斯蒂尔夫人曾是英国迪德科特圣公会小学的校长。