Holding a cup in the aisle of the school building.

"Ding—"

"Da Da Da"

The water gurgled and fell into the cup, like a spring beating against a stone.

"The quenching effect of copper ions, well... Well... The quenching effect of copper ions is..."

Behind the glass door facing the garden, there is a large empty platform in the middle, and there is a girl carrying a small maza, holding a book in one hand, and a few pages of paper are in it, fluttering and exposed. When he saw me coming, he glanced at me and raised his head to continue his back

"Uh... Co-precipitation... Belch... Silver ion co-precipitation... Yes..."

PPT has been done all morning, my brain is very tired, I want to find someone to chat casually, or hug and say

"Oops, I'm so tired of this one."

I thought about it stupidly, I can only feel my tiredness, and I don't want to do PPT at all, but I have to talk about it the day after tomorrow, and I have to rehearse for my team members tomorrow.

The classroom is much hotter than the library, but it's not very hot, and when you stay in the library, you will feel that the classroom is hot.

The children in the classroom, with stacks of books piled on both sides, buried their heads in them, some plugged in headphones, leaned back on the chairs and looked at the tablet.

In the summer, it was stuffy, and when I came at noon, there were children sleeping on the table.

It seems like a lot of work, but I think it's a job that you can do with just practice, and it's enjoyable to do.

Whew—

I'm lazy, sitting on a chair and staring, but I don't want to touch the computer to do PPT.

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