Tennis wear has become a very lucrative business for both manufacturers and tennis stars.
Giải chi tiết:
lucrative = sinh lợi
A. bất hợp pháp
B. mở rộng
C. gián tiếp
D. lợi nhuận
Biogas can be utilized for electricity production, cooking, space heating, water heating and process heating.
Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.