1.Dr Szabo: Toll-like receptors are evolutionary preserved receptors that can recognize danger signals from pathogens and from a damaged host.
like受体的进化比较保守，可以识别出病原体和受损宿主的危险信号。
2.T taught us about heart failure and how to recognize danger signs so I know when to get my father to the emergency room.
T医生教会我们关于心脏衰竭，以及如何认识危险信号，因此，我知道什么时候把我的父亲送到急救室。