improvement on的用法和樣例：
例句
- If word were invented to conceal think, newspaper should be a great improvement on a bad invention.
假使語言是為了隱藏思想而被發明的，那么報紙就是對這不良發明的一大改進。 - If words were invented to conceal thought, newspapers are a great improvement on a bad invention.
假使語言是為了隱藏思想而被發明的，那么報紙就是對這不良發明的一大改進。 - This essay represents a considerable improvement on your recent work.
這篇論文說明你最近的工作取得了相當大的改進。
