"Mathematically, it's not even clear what the right questions to ask are," Erik says of the curved creases, which are at the cutting edge of folding research.
“从数学上来说，甚至还不清楚该问什么样的问题。”埃里克谈及处于折叠研究前沿的曲线折痕时说道。
2
A folding keyboard is set forth with a numeric keypad, and one fold line located between the edge of a standard continuous space bar and the edge of the numeric keypad.