杭州交通信息网吉他的简笔画步骤:帮帮翻译一下
来源：百度文库 编辑：杭州交通信息网 时间：2024/04/26 23:29:02
煤产量比去年增加三倍
The coal yield compares to increase the triple last year就是这样了。
Coal productive ratio last year increased three times
the production of coal is four times as much as that of last year
煤的产量是去年的四倍
The producation of coal is trice that of last year's.