Word/Phrase: sepan
Translation: let them know
Pronunciation: seˈpan
They want to know - Ellos quieren saber
Please let them know - Por favor, háganle saber
I hope they let them know - Espero que les hagan saber
Can you let them know? - ¿Puedes hacérselo saber?
It is important to let them know - Es importante hacérselo saber