thuộc thời đại 
of the time, age, era [ thuộc ] : (1) to belong, of, part of, occupation; (2) to know by heart; (3) to tan, cure
[ thời ] : time(s), era
[ đại ] : (1) large, big, great, very, much; (2) period, era
Most Common Compounds Set 1:
Most Common Compounds Set 2 :