One challenge for Virtual Greats and its partners is to create legitimacy for the online brands while ensuring that there is not too much supply.

Virtual Greats的一个挑战是，既要合法建立网络品牌，又要保证其稀缺性。

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As the market for agricultural products becomes more globalized, every link of the supply chain faces the challenge of increasing efficiency while ensuring product safety, quality, and reliability.

伴随农产品市场的全球化，供应链的每个环节都面临产品安全性、品质可靠性、提高效率的挑战，以及传统农业向低碳农业转变的行业趋势。

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The electricity market reforms (EMR) proposed by the UK government as part of the UK Energy Bill are aimed at incentivising investment in low carbon energy while also ensuring the security of electricity supply.

BBC: Electricity Market Reform debate 1

"We are facing an unprecedented challenge in ensuring security of future supply while making the transition to a low carbon generating mix, " he said.

BBC: SSE boss Ian Marchant warns of risk of 'lights going out'