考虑到经济深度滑坡的威胁，中国2009年初出台的大规模逆周期货币及财政刺激计划是适当的。

China's massive counter-cyclical monetary and fiscal stimulus in early 2009 was appropriate given the threat of a severe downturn.

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近年来，随着煤炭开采深度、开采强度、开采速度、开采规模等不断增加，煤炭开采受地下水威胁、危害日趋严重。

In recent years, with the increase of the coal mining depth, intensity, rate and the exploitation scale, coal mining is under the serious threat of groundwater.

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随着煤矿开采深度的增加，冲击地压危险越来越大，已成为严重威胁矿井安全生产的主要灾害。

With the increase of mining depth, the possibility for rock burst increases correspondently. It has become a major factor which endangers the safe operation of coal mines.

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