theart.那；这；这些；那些adv.（用于比较级前）更加；用于最高级前；(用于形容词、副词比较级前)越 ... 越 ...The Glenlivet格兰利维特纯麦威士忌

1. Smoking is one of the chief causes of lung cancer.
   吸烟是导致肺癌的主要成因之一。
2. Self-interest explains much of its impact.
   自身利益解释了其影响力的成因。