...but putting about same pressure on the ground as an average-size person sitting in a chair.
问题描述：
...but putting about same pressure on the ground as an average-size person sitting in a chair.
答
对地面造成的压力相当于一个中等身材的人坐在椅子上的压力。
答
⋯ 但在地面上增加了一股压力,大小相当于一个中等身材的人坐在椅子上所造成的压力.
这里有一个same...as “和⋯⋯一样”的结构,请勿忽视.