1. 她在一封長信里闡明了辭職原因。
   She set out the reasons for her resignation in a long letter.
2. 總統(tǒng)在電視講話中闡明了他的計劃。
   The president set forth his plans in a television talk.
3. 作者在前言中闡明了他寫這本書的原因。
   In his preface the author set forth his reasons for writing the book.
4. 研究計劃一個學生或一組學生執(zhí)行以使用、闡明或補遺課堂作業(yè)的大量任務(wù)
   An extensive task undertaken by a student or group of students to apply, illustrate, or supplement classroom lessons.
5. 該案闡明了一個有趣的法律原則問題。
   The case illustrate an interesting point of legal principle.

明的英語翻譯：