1. specialty // @ (N-count) someone‘s specialty is a particular type of work that you do most, or a subject that they know a lot about
@ (N-count) A specialty of a particular place is a special food or product that is always very good there
2. professional // @ adj. professional means relating to a person‘s work, especially work that requires special training.
His professional career sdtarted at Liverpool University.
3. confirm // (confirms, confirming,confirmed) [VERB] (NOT-COUNT) If something confirms what you believe, suspect, or fear, that it is definitely true.
4. rely // v. @ If you rely on someone or something, you need them and depend on them in order to live or work property.
原文：http://www.cnblogs.com/666638zhangqiang/p/4685941.html