日期:
来源:雅诚德英语网
Trees on the hills have been cut down, and waste water is being poured continuously into rivers.
山上的树木被砍伐,污水不断被排入河流。
Trees on the hills have been cut down, and waste water is being poured continuously into rivers.
山上的树木被砍伐,污水不断被排入河流。