無人 むじん宇宙 うちゅう補給 ほきゅう でしょう
mujin'uchūhokyūkideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 無人宇宙補給機

1. Probably an unmanned spacecraft.; Probably a supply vessel.

Polite
Presumptive
Conjecture