Thank you for your reply.
This problem has been solved.
my understanding is: WPML default same text only needs to be translated once.
So I added 3 “Bordered products grid” but didn’t change the text, so he only showed one that needs to be translated.
If I add 3 “”Bordered products grid”, and then edit the text first:
https://prnt.sc/e8x9q8vg3MAI
Then wpml will translate each “”Bordered products grid”
https://prnt.sc/5dq5PnKCd9Q0.
Hope my experience can help others.