他们中的大多数人在课程开始前都参加了在线语言测试。

The majority of them took an online language test before starting their programme.

youdao

我们的物种起源于大约20万年前，并经历了13万年的惊人的多样化进程，包括文化、技术、语言和艺术等方面。

Our species originated around 200,000 years ago, and underwent tremendous diversification, culturally, technologically, linguistically, artistically, for 130,000 years.

youdao

可能在人口流动性方面最具说服力的标志是，公元前3000年，在这片广袤的土地上大部分牧民讲的相关语言，现代印欧语系就从中发展而来。

Perhaps the most striking sign of mobility is the fact that by the third millennium B.C., most pastoralists in this huge region spoke related languages ancestral to the modern Indo-European languages.

youdao

So C or the compiler's for C are kind of dumb, by definition of the language years ago, whereby, they only know about what they've already seen.

所以C或者C的编译器是有点愚蠢的，根据多年前这个语言的定义，凭借那个，他们只知道,他们所看到的。

哈佛公开课 - 计算机科学课程节选