Part 6
后代hòu dài
posterity, later periods, later ages呼吁hū yù
to call on (sb to do sth)回收huí shōu
to recycle, to reclaim, to retrieve土壤tǔ rǎng
soil天然气tiān rán qì
natural gas守护shǒu hù
to guard, to protect宣扬xuān yáng
to proclaim, to make public or well known屏障píng zhàng
protective screen干旱gān hàn
drought, arid, dry弥漫mí màn
to pervade, to fill the air