因此，它们是多因复成的。

Therefore, they are of polygenetic compound.

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夺目的金黄、耀眼的阳光、纯粹的笑容，相互交替更迭成一幅不可复加的风景。

Eye-catching gold, dazzling sunshine, pure smile, alternating with each other as a change of scenery can not be added.

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地洼学说对成矿学的又一突击贡献，是提出多因复成成矿论及多因复成矿床。

The another outstanding contribution of diwa theory to metallogeny is the concept of polygenetic metallogeny and polygenetic compound ore deposits.

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