The primary rules of obligation are those that require or forbid certain actions.
主要的义务规则是那些要求或禁止某些行为的规则。
We must balance economic growth with environmental responsibility to achieve long-term success.
写作是为那些没有声音的人发声的一种方式。
"A book is a bridge between souls, connecting the reader and the writer across time and space."
Active management strategies are unlikely to produce superior results after fees.