leur expliquer
He is not going to explain it to them.
Il ne va pas leur expliquer.
She is not going to explain it to them.
Elle ne va pas leur expliquer.
Don't explain it to them; you're wasting your time.
Ne le leur explique pas ; tu perds ton temps.
If you explain it to them, they'll understand.
Si tu le leur expliques, ils comprendront.
— Weathering with You (2019)