thirty ☊ like: ba mươi → →
dreißig ☊ 
ba mươi ☊ 
三十 ☊ sānshí dreißig ☊ ba mươi ☊ ☊ Über dreißig Zeugen sagten gegen den Mann aus und belasteten ihn schwer. ☊ Hơn ba mươi nhân chứng chống lại anh ta và chỉ trích anh ta nặng nề. ☊ (Lektion 63, Nr. 892) appear to do sth: She appeared to be in her late thirties. ☊ appear ☊
She's in her mid-thirties—thirty-six to be exact. ☊ exact ☊
He lived at home (= with his parents) until he was thirty. ☊ at home ☊
a man in his thirties ☊ in ☊
thirtyish ☊ #NAME? ☊
She's in her mid-thirties. ☊ mid- ☊
At thirty years old, he was already earning £40 000 a year. ☊ old ☊
a new comedy aimed at thirty-somethings (= people between thirty and forty years old) ☊ something ☊