Various approaches have been used to improve the performance of adapted indigenous stock, including cross-breeding and upgrading through back-crossing with improved breeds, and within-line selection.

已有多种方法被用于提高地方良种的性能，包括杂交育种，以及通过与良种的回交和品系内选育进行的品种改良。

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There have been many groups represented over time, from enslaved and indigenous peoples, those of European stock, and now to a population reflecting the wider world -- truly a "melting pot, " he said.

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China too is moving to the next level by developing its own indigenous venture capital community, its own local currency funds and its own stock exchanges.

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