His new yacht is certainly an ostentatious display of his wealth.
Giải chi tiết:
Đáp án là A. ostentatious = showy: khoe khoang
Các từ còn lại: expensive: đắt; large: rộng; ossified: cứng nhắc
Biogas can be utilized for electricity production, cooking, space heating, water heating and process heating.
Population growth rates vary among regions and even among countries within the same region.