Some involve physical remedies. Flood protection demands embankments, or DAMS, or protected flood plains, or houses that rise and fall with the waters.
一些是物理补救,防洪需要堤防、大坝或受保护的洪泛区或随水涨落的房屋。
3
Crocodiles have been protected by federal law since 1971, and their Numbers in Australia's tropical waters have steadily grown.