epistle [ɪˈpɪsəl]

例句:

• He longed to put a little affection into his epistle.
  他渴望在信里流露出点爱慕之情.
  
• A reference to " natural law " can be found in the Epistle of Paul to the Romans.
  在圣保罗致罗马人的使徒书信中就已论及了 “ 自然法 ”.
  
• The epistle deals therefore with the sovereign and universal principles.
  这封书信讲到了至尊的,最大的原则.
  
• But can the art of the epistle survive e-mail and Twitter?
  来自THETIMES