1. Mang nghĩa"kép, đôi; hai mặt"
=used about things that have two similar aspects, parts, or functions/with two parts, or combining two things
IELTS TUTOR xét ví dụ:
- This car is fitted with dual airbags.
- dual ownership (IELTS TUTOR giải thích: quyền sở hữu tay đôi)
- dual control (IELTS TUTOR giải thích: sự điều khiển tay đôi)
- ...his dual role as head of the party and head of state.
- Rob may be entitled to dual nationality.
- This room has a dual purpose, serving as both a study and a dining room.
- the dual role of chairman and chief executive
- In June, he bowed to shareholder pressure and split his dual role as chief executive and chairman.
- With more families requiring dual incomes, people have less time to shop and run errands.
- All cars manufactured after 1998 are required to have dual airbags.
2. Mang nghĩa"có song tịch"
=the nationality of two countries at the same time