副詞 on paper:

1. as written or printed
   同義詞：in writing
2. as described in contrast to as practiced
   同義詞：in theory
3. according to the assumed facts
   同義詞：theoretically, in theory

1. Could you put a few ideas down on paper?
   把你的一些想法寫出來可以嗎?
2. Why don't you set your ideas down on paper?
   你怎麼不把你的想法寫在紙上呢?
3. It's a fine scheme on paper, but will it work in practice?
   那計畫不錯，不過實踐上是否可行？
4. He drew an oblique line on paper.
   他在紙上劃了一條斜線。