The Machadodorp tuff and agglomerate, which is higher-lying than the Ongeluck lave, is known only from the Eastern Transvaal.
层位较昂格鲁克岩流为高的马却多多普凝灰岩及集块岩，只见于德兰士瓦东部。
Carnegie Mellon University Economics Professor Lester Lave says the economic crisis made the change urgent.
卡耐基-梅隆大学经济学教授莱斯特·莱夫称，经济危机导致这种改变的迅速发生。
Carnegie Mellon University Economics Professor Lester Lave says the economic crisis made the change urgent.
卡耐基-梅隆大学经济学教授莱斯特·莱夫称，经济危机导致这种改变的迅速发生。
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