Costumes usually have many designs and colors.
戏服通常有多款设计和配色。
Only a handful of homes are zero-carbon, however, and many designs are too expensive to merit mass production
然而只有少数家庭是零排放,许多设计太过昂贵,不值得大量生产。
We've seen far too many designs that simply assume the identity is known when practical technologies make this infeasible.
我们已经见到太多的设计直接假设标识为已知,而实际技术却使得这变得不可行。
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