Unless a teacher has, like Hess, married a Taiwanese and firmly rooted himself here, otherwise it can be very difficult to retain a foreign teacher, much less get that teacher to devote himself or herself to the job of teaching English.
除非像他一樣娶了台灣太太、已在台灣生根，否則外籍老師想長留此地很難，更難談全心投入英語教學工作了。