a technical system of symbols used to represent special things
a comment or instruction (usually added);
"his notes were appended at the end of the article"
"he added a short notation to the address on the envelope"
the activity of representing something by a special system of marks or characters
He introduced a notation for negative numbers. 他为负数引进了一个符号。
A more convenient notation will now be given. 现在将给出一种较为方便的表示法。
You Westerners use the five-line staff notation. 你们西方人用的是五线谱。
He made a notation on his engagement calendar. 他在约会日程上作了记载。
The authors wish you to read it with a pencil in your hand, for you will often be asked to make certain notations, to write answers to particular questions. 作者们希望你在读这本书的时候手里要拿上一支铅笔，因为我们要求你经常做点笔记，或是将一些具体问题的答案写下来。
Music has a special system of notation. 音乐有一套特殊的标记法。
He made a notation on the margin of the paper. 他在纸边上作了一个记录。