It's foreign, it's not part of the host or not a normal part of the host.

所以它成了外源物,外源物不是宿主的一部分,至少不是正常的一部分

耶鲁公开课 - 生物医学工程探索课程节选

The second part of the question dealt with the changes in our exposure to foreign assets and that's an area that we've been very interested in.

第二个问题是关于,我们在国外资产投资上的变化,这一直是我们很感兴趣的领域

耶鲁公开课 - 金融市场课程节选

It can separate between what's part of yourself and what's foreign, and it does that by presenting, by recognizing antigens that are presented in the context of the major histocompatibility complex, MHC.

免疫系统可以识别出哪些是属于你的,哪些是外来的,它通过呈递和识别抗原达到目的,而抗原是存在于,主要组织相容性复合体中的

耶鲁公开课 - 生物医学工程探索课程节选

Aristotle famously was a tutor of Alexander the Great. Machiavelli spent a large part of his career in the foreign service of his native Florence and wrote as an advisor to the Medici.

亚里士多德有指导亚历山大大帝的著名史实；,马奇亚维利职涯中,长期服务于佛罗伦萨,原乡的外交部门,而且是梅迪西家族的顾问；

耶鲁公开课 - 政治哲学导论课程节选

That is a new part of India's economy, and to the extent that by globalization, one needs more foreign investment and increased connection to foreign trade they are playing a role but India's economy growth is largely being driven by internal investments.

那也是印度经济,新的组成部分，从某种层面来说，由于全球化，经济发展需要,吸引更多外资，促进外贸,这些因素确实起了作用,但印度经济增长大部分还是靠,国内投资。

普林斯顿公开课 - 国际座谈会课程节选