Usages of salah satu
Teman saya dan pasangannya saling mendukung ketika salah satu merasa stres.
My friend and her/his partner support each other when one of them feels stressed.
Salah satu teman saya belajar di perpustakaan malam ini.
One of my friends is studying at the library tonight.
Elon.io is an online learning platform
We have an entire course teaching Indonesian grammar and vocabulary.