无论你是何种文化背景，在现今这个生活节奏越来越快的社会，某些细节也许就能体现你的与众不同，和留学群小编一起来看看美国留学申请套磁礼仪。1E-mail is forever. Once you send it off, you can't get it back. Once your professor has it, he or she owns it and can save it or, in the worst case, forward it onto colleag...