"They order food."

Translation: Mereka memesan makanan.

[CheYinChen]

What's the difference between using pesan and memesan in this sentence?

[lockers001]

Memesan emphasises the subject (they) but would not be used if it was very clear who 'they' are.

[JoshuaDins]

Thank you

[Sile2711]

So how do I know if it's in present or in past?!