Last year,he says, the UNHCR with the support of the Greek Ministry of Interior, made recommendations for a complete overhaul of the system, including specific measures to protect children seeking asylum.

VOA: standard.2009.08.29

So, I have a bacteria infection, stimulates my immune system, I start making antibodies that bind to an antigen specific to that bacteria.

所以 如果我被细菌感染了,我的免疫系统被激活,开始制造抗体,这些抗体结合到细菌特异性的抗原上

耶鲁公开课 - 生物医学工程探索课程节选

Learning how to turn on your immune system to protect you from a specific pathogen turns out to be very particular to that pathogen.

它发动你的免疫系统来保护你,免受某种病原体的侵袭,只是针对这种特定病原体

耶鲁公开课 - 生物医学工程探索课程节选

Again, in the context of a specific tissue site, in this case it's the nervous system.

当然又是放在某种组织当中来说,这次是在神经系统

耶鲁公开课 - 生物医学工程探索课程节选