这些缩写都怎么用
nsdd
u1s1
zqsg
srds

See a translation

Guess what? Even Chinese can't understand how to use them. So someone created this website, and we can look up these abbreviations on it:
能不能好好说话？（ https://lab.magiconch.com/nbnhhsh/ ）

By looking up their exact meaning, you may understand how to use them.

Let me present some detailed explanations:
1. nsdd: "You are right". It implies that you think someone is wrong but you don't want to argue with him/her.
For example:
- 我觉得你的这个想法有问题
- nsdd

2. u1s1: Use it when you want to clarify a fact that has been ignored.
Example:
- 不会吧，不会吧，不会真的有人玩 HiNative 吧
- u1s1，我觉得 HiNative 还是挺好用的

3. zqsg: I've never seen anyone use this word.

4. srds: "Well, maybe you are right, but I still think ...".
Example:
- 我跟你讲，你不要指望在 HiNative 上提问会有人回
- 虽然但是，在 HiNative 问问题真的有用

It's better to notice that all these words (except zqsg) and examples are somewhat negative. Use them with causion.