求翻译：目前全球跨国公司约4.5万家，其生产和贸易总值约占全球贸易量的50%，它们伸向全球物流的触角就是现在物流业。是什么意思？

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The current global multinational corporations about 45,000 homes, and their production and trade value accounted for approximately 50% of the volume of global trade, they extend to global logistics is now the tentacles logistics industry.

At present global multinational corporation approximately 45,000, its production and the total trade approximately compose the global volume of trade 50%, they extend to the global physical distribution antenna are the present physical distribution industry.

Transnational corporations in the world now about 45,000, their production and trade worth about 50% of the total volume of global trade, their tentacles reaching global logistics is now the logistics industry.

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