This is just an acronym that you still see and use today, though there were newer systems that are more expressive for other languages, non-romance languages.

这就是你仍在看到和使用的缩略词，尽管出现了新的语言系统,能够更好的表达其他的语言。

哈佛公开课 - 计算机科学课程节选

Well, the thought, I suppose is, in philosopher's jargon, that the computer is a deterministic system.

对于这个观点,我认为,以哲学的语言可以表达为,电脑是个决定论的系统

耶鲁公开课 - 死亡课程节选

An antigen expressed in the context of MHC stimulates your immune system.

同MHC共同表达的抗原,激活了免疫系统

耶鲁公开课 - 生物医学工程探索课程节选