This is what Silver calls "the challenge of scaling up".
这就是Silver所说的“扩大规模时面临的挑战”。
WHO is in discussion with manufacturers regarding the potential need for scaling up production.
WHO正在与制造商们讨论是否需要扩大生产规模。
Scaling up would be more efficient, but requires capital equipment.
扩大规模可以提高效率，但这需要资本设备。
Scaling up would be more efficient, but requires capital equipment.
扩大规模可以提高效率，但这需要资本设备。
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