要害?vital part;crucial point
?strategic point
?the jugular
…是～問題，其他一切問題都是由此派生出來的?！璱s the crucial question while all other questions are derivative from it(or which gives rise to all other questions)/地處～located at a point of strategic importance/擊中～hit the nail on the head;hit home;hit where it hurts/回避～ evade the crucial question (or issue)/抓住～ scratch where it itches /善于抓住～show an instinct for the jugular/～部門key department;sensitive department/～部位vital part/～問題crucial issues |