This is the 5225th most frequent Chinese word.
上說
"上說" means "stated above" or "as mentioned above."
Here, '上说' is used to indicate the information stated in the textbook.
在课本上说,这个公式很重要。
The textbook says this formula is very important.
Here, '上说' refers to something mentioned or stated during the meeting.
专家们在会议上说,我们需要新的方案。
Experts said at the meeting that we need a new plan.
Here, '上说' conveys information presented in the advertisement.