And the seepage pressure mechanism is the primary mechanism of karst collapse in the center of cone of depression in continual pumping region.

渗压效应致塌机制是多年持续采水区降落漏斗中心部位岩溶塌陷的主要力学机制。

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"The primary objective of this offensive is to force the collapse of the TFG and to force AMISOM to leave Somalia,".

VOA: standard.2009.06.26

Nye agrees with Mr.Klaus that the primary causes of the Soviet collapse were economic failure and the decline of communist ideology.

VOA: standard.2009.11.03

Indeed, with the dollar price of gold having reached an all-time high in January of 1980, the yellow metal began a long collapse downward once Reagan won the New Hampshire Republican primary.

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The summit largely focused on one of the primary causes of the global economy's lethargic recovery -- the threat of a European currency collapse that would roil the already fragile economies of most of the 17 countries that use the euro.

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