名詞 twain:

1. two items of the same kind
   同義詞：couple, pair, twosome, brace, span, yoke, couplet, distich, duo, duet, dyad, duad

1. Samuel Clemens, who was known as Mark Twain, became a famous American writer.
   塞繆斯·克萊門斯，以馬克·吐溫知名，成了美國名作家。
2. Mark twain was once a river pilot on the Mississippi.
   馬克。吐溫曾當過密西西比河上的領航員。
3. Mark Twain and Samuel Clemens were one and the same person.
   馬克·吐溫和賽繆爾·克萊門斯是一個人。