Paub Siv Cov Tub Rog Hloov Siv, Siv Hloov Kho Infrastructure Yuav Tsum Tau Ua Cov Nyiaj Txiag Rau Cov Pej Xeem Cov Kev Xav Tau (Economic Kev Siv Nyiaj)
Kev siv rau ntawm ib lub tebchaws uas muaj kev tiv thaiv "tiv thaiv" yog astronomical.
Kev siv rau ntawm ib lub tebchaws uas muaj kev tiv thaiv "tiv thaiv" yog astronomical.