Clarification: 

No need to translate in here means the segments should be kept as-is in translated result.  

Hi Raynor Chen

Thank you for your post. 

2 things come to mind.

1. File Type settings

How has your file type settings been defined? Are you using any of the embedded content processors?
As I believe from that point on you can confirm certain strings as tags and then clarify if the tag is inline or structure etc.

2. Trados Data Protection Suite

I love this app: https://appstore.sdl.com/language/app/trados-data-protection-suite/936/

I use it in a way that in not strictly conventional but it may give you some short term relief  that I want to mentioned regardless.
Regardless of your file type settings (primary area to perfect), if you have your strings in plain text within the Studio Editor you can try run the app - define your regex rules and it will tag accordingly. 

Both options means the titles will be part of the sdlxliff but they should be tagged and therefore protected.

I hope this helps and gives you avenues to explore

Lyds

Raynor Chen

You cannot exclude anything using regex in the markdown filetype.  Looking at your file only the first two expressions match anything anyway so a more complete example would be helpful.  But based on your example I would exclude these two matching expressions using the advanced display filter as they match the headings and list items.

So you could either just hide them, or lock them leaving only the paragraph items for example.

IF you are not using the out of the box markdown filetype and have instead built your own using the Regular Expression Delimited Filetype then you can of course build the filetype to exclude whatever you like.

Perhaps you can share a sample that includes enough examples for us to provide a more helpful answer?

I also just noticed Lydia Simplicio already responded and her idea of the Data Protection Suite is also a good one.

Plenty of options... just need a better idea of what you have to suggest the most appropriate solution.

Thanks for your reply, I'm confirming with our translating team. Will update the status in here later. 

Thanks for your reply, I'm confirming with our translating team (since yesterday). Will update the status in here later. 

Update: 

Trados can leave no-need-to-translate statements without commit them.

Confirming with our translating team.