Only the sharing of plant genetic material from different regions and countries will enable us to explore the unknown characteristics and the future potential of plant genetic resources.

只有分享来自各个不同区域和国家的植物遗传材料，我们才能去探索植物遗传资源的未知特性和未来的潜力。

youdao

The soundness of the business case is unknown to outsiders. Mr. Bigelow declines to say if he has firm commitments from any countries or companies to rent space on his space stations.

对局外人来说，这种商业模式是否可靠还是未知之数，在被问及是否已经向其他国家或公司作出要出租太空站空间的承诺时，毕格罗也拒绝提供答案。

youdao

That may be difficult to realize, however, because an unknown number of doses is already tied up through contracts between pharmaceutical companies and countries that can afford them.

不过，因为不知多少疫苗已经被买得起的国家和制药厂签订采购合同预订了，这些计划实现起来也许有些困难。

youdao

Such arrangements are common in other countries, and not unknown in England and Wales.

ECONOMIST: Police muddles mean botched prosecutions. Time for reform

Overall there are a lot of unknown costs to countries, companies and citizens if a country changes currencies.

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May God have mercy on our two countries as we face the unknown.

BBC: Is the UK government right to deploy British troops?