dunia in that case is world, literal meaning. dewasa ini means nowadays. so you may translate that phrase to "international law used in the world nowadays"

'Hukum modern yang dipakai di dunia dewasa saat ini' mean modern law is used in the world now. 'Dunia dewasa saat ini' is a metaphor which mean 'now', 'this time' 'this era' etc.

Hello, I am cynthia, I saw your brief details and decided to write you. I want to make a good friendship.I Feel we shall make a better introduction in our next communication. contact me through my email address ([email protected] ) for more details and my pictures. I will like to know you better for more personal information, please do not write me on this site because i do not visit the site all the time..kindly reply me with ([email protected] )i am waiting . Thanks

Hukum modern yang dipakai di dunia dewasa ini = The modern law which is used in the world this time/in this era. di dunia = in this world dewasa ini = this time/this era (in this context, 'dewasa' doesn't mean 'adult/mature')

thanks to all! I think dewasa means 'adult'. so it was difficult for me to understand :)) terima kasih!