Today,when I am chatting with one of my classmates,encounter it,so I googled more about it:

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　　How to say "师兄"

　　During a delightful meeting with some readers last week at Beijing Institute of Technology, a student from Renmin University of China asked: "How to say '师兄/师姐' in English?"

　　That's a good question.

　　"师兄/师姐", or "师弟/师妹"，is from Chinese martial arts culture. Fellows learning from the same master (师父) are "senior/junior male/female fellow apprentices". As the saying goes, "The master teaches the trade, but the apprentice's skill is self-made" (师父领进门，修行在个人).

　　On campus these words refer to students who're studying in or have graduated from the same major at the same university. "Alumnus" (校友) may be the closest word in English. But a sentence like "John and I are both alumni of Ohio University" indicates both John and the speaker have graduated.

　　So, to translate "师兄师姐" into English, we have to describe instead of using single words.

　　Several suggestions are:

　　* "We're both majoring in business at Ohio University." (我们是在俄亥俄大学学商务的同门。)

　　* "She shares the same major as me but is senior/junior to me." (她是跟我同专业的师姐/师妹。)

　　* "He's in my same major but a year ahead." (他是跟我同专业的上届师兄。)

　　* "He's in my major but a year below/behind me." (他是跟我同专业的下届师弟。)

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　　师兄

　　shīxiōng

　　[senior fellow apprentice]∶称先与自己从同一个师父学习的人

　　[the son of one's master (older than oneself)]∶称师父的儿子中年龄比自己大的人

　　[father's apprentice (older than oneself)]∶称父亲的徒弟中年龄比自己大的人

　　[a polite form of address to a monk]∶旧时对和尚的尊称

　　but sb said that its called senior apprentice or senior shoolmate,I think either is ok,because it just be a word of Chinese English.

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　　导师的英语表达：supervisor(论文导师）,

　　注意tutor是不对的！tutor在大学里面相当于国内的辅导员，比助教还低一个档次的教师。sometimes use the word advisor,but supervisor is formal.

　　助教： tutor

　　讲师 lecturer

　　教授 professor

　　导师supervisor

　　博士生导师：doctoral supervisor或者是PHD supervisor

　　另：博导 Ph.D supervisor ; doctoral advisor

　　导师：supervisor， advisor