2. But all of its cornerstone, is life! 但所有的一切，其基石就是生命！
3. Never forget that doing what you love is the cornerstone of having success in your life. 永远不要忘记：做你所爱做的事情是你人生获得成功的基石。
英英解释
n.
1. the fundamental assumptions from which something is begun or developed or calculated or explained
2. a stone in the exterior of a large and important building; usually carved with a date and laid with
3. a stone at the outer corner of two intersecting masonry walls
