I do not know that they are famous people. ☊ 
Tôi không biết họ là người nổi tiếng. ☊ Adjectives 1 like: người nổi tiếng → →
der Prominente ☊ người nổi tiếng ☊ 
☊ Die berühmte Person ☊ Người nối tiếng ☊ (Lektion 39, Nr. 558) Er sieht eine berühmte Person entlang kommen. ☊ Tri nhìn thấy một người nối tiếng đi ngang qua. ☊ (Lektion 39, Nr. 561) All the flags were at half mast (= in honour of a famous person who has died). ☊ flag ☊
I meet famous people practically every day. ☊ practically ☊
the popular/tabloid press (= smaller newspapers with a lot of pictures and stories of famous people) ☊ press ☊
a public figure (= a person who is well known because they are often on the television, radio, etc.) ☊ public ☊
I couldn't resist the opportunity to meet a real live celebrity. ☊ real ☊
She found herself something of a (= to some degree a) celebrity. ☊ something ☊
Chinese speakers ☊ speaker ☊
She achieved celebrity status overnight. ☊ status ☊
He was voted the worst dressed celebrity. ☊ worst ☊