要害❶vital part;crucial point
❷strategic point
❸the jugular
…是～问题，其他一切问题都是由此派生出来的。…is the crucial question while all other questions are derivative from it(or which gives rise to all other questions)/地处～located at a point of strategic importance/击中～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/～部门key department;sensitive department/～部位vital part/～问题crucial issues |