where giant land masses are pulling away from one another. 巨大的陆地板块在此互相分离
Its richest parts are those where waves and currents bring fertilising nutrients to surface waters that are bathed in sunlight. 当海浪和洋流把大量营养物质翻上 沐浴着阳光的表层海水时 那里便成了最热闹的用餐场所
where the snow is unmarked by footprints. 雪地上没有被踩过的脚印
That is where she hunts for the seal she needs to feed her cubs. 而母熊则需要在那里捕杀海豹 喂养幼熊