不仅最早的扶梯是木造的，甚至验证它的“人”的脚也是木的。

Not only were the early escalators made of wood, but also the legs of the people who demonstrated them.

youdao

不仅最早的扶梯是木造的，甚至验证它的“人”的脚也是木的。

Not only were the early escalators made of wood, but also the legs of the people who demonstrated them.

youdao