这款新发明名为“利维电动梯”，其每层阶梯边缘都是弯曲的，可以让一段闭合扶梯扭转、弯曲以及绕着角落蜿蜒而行。
Called Levytator, the invention has curved steps that allow to twist, bend and snake around corners in a continuous loop.
下半场的利盖梯奏鸣曲在当代大提琴作品中占有非常重要的地位，包含了很多丰富的演奏技巧。
Gyorgy Ligeti's Sonate, appearing in the second half of the concert, plays an important role in the contemporary cello repertoire, featuring a rich variety of performance techniques.
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