I want to plant the slopes of the hills with trees of economic value.
想在山坡上种经济树木。
The rock breaking without smoke,dust,slungshot,noise and any internal injury can reduce environmental pollution and energy consumption,which has great economic value and social sense.
想在山坡上种经济树木。
、无飞石,无噪声及无任何岩石内伤,可以减少环境污染,
耗。
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们指正。
