how is my new picture? Just want to show off, haha

do people in english speaking countries (especially the younger generation) speak slang often nowadays ?

is it easy for a British or an Australian guy to understand American slang ? or vice versa ? for example, can you understand what Joe said in the follow conversation without the translation. Joe Cool: This is like a totally rad company. Man, it's phat. like rippin'. I can for sure supersize in a total ten place like this, sir. (Translation: This is a great company. It's impressive. Very impressive. I can really make a contribution to a great company like this one, sir.) Interviewer: Well,Mr Cool, thank you for your time. I shall waste no time reading your resume. Joe Cool: Slap me five. (translation: You're insulting me.)

which kind of terms is more frequently used in Anatomy terminology? i am learning human anatomy now here in china, however, there are mainly two kind of medical terms i come across in our textbooks. such as: inferior nuchal line = linea nuchae inferior, supra clavicular lymphnodes = Nodi lymphatici supraclaviculares, inferior thyroid artery = A. thyroidea inferior etc.. to me the former ones look more like english, and the latter ones seems more like Latin or something as it does not follow regular english grammar. would some body be kind enough to tell me which kind of them are more frequently used internationally, or which of them are more popular in english textbooks used outside of china? should i know both of them, or just the former ones would be enough, as i am planing to further my education in med. schools overseas?

Are these words commonly seem in ordinary life? aspic, bechamel ,bouillon, casserole, charlotte,compote,crepe,croquette, escargot,fricassee, meringue, ragout, terrine

how to differentiate the pronunciation between efferent and afferent ? how can you tell between them when someone say them within a sentence at a normal speed? (for christ's sake ,i have to ask the same stupid question again ,cuz i misclicked the Best Answer button last time)

how do you differentiate the pronunciation between efferent and afferent ? how can you tell between them when someone say them within a sentence at a normal speed?