The Vietnamese word "ba tư" refers to "Persian" in English, specifically relating to the people or culture of Persia, which is an ancient name for modern-day Iran.
Câu 1: "Tôi thích ẩm thực Ba Tư."
(I like Persian cuisine.)
Câu 2: "Người Ba Tư nổi tiếng với sự hiếu khách."
(Persian people are known for their hospitality.)