lodestar
(also loadstar), n
(a) star used as a guide in navigation, esp the pole-star 用以指示航向的星; (尤指)北極星.
(b) (fig 比喻) principle that guides one's behaviour and actions (行為和行動的)指導原則.
??? 情景例句
Where is your domicile?
你的戶籍在哪里?
More of our worries come from within than from without.