You can't change the past, but you can shape the future.

I have always been drawn to stories that explore the complexities of human relationships.

终极情境——死亡、机会、罪恶和世界的不确定性——使人面对他存在的现实。

Science is the tool with which we unravel the mysteries of life.

解释：药物之间有阴阳、子母、兄弟等配对关系，说明药物配伍的原理。