Portuguese
Estudei cerca de 30 minutos.
Spanish
Estudié unos 30 minutos.
Korean
저는 약 30분 공부했습니다.
French
J'ai étudié environ 30 minutes.
Italian
Ho studiato circa 30 minuti.
German
Ich habe etwa 30 Minuten gelernt.
Indonesian
Saya belajar sekitar 30 menit.
★
Vietnamese
Tôi học khoảng 30 phút.
Thai
ฉันเรียนประมาณสามสิบนาที