That is perhaps why sculpture has been described as the most difficult of all arts ; certainly it is more difficult than arts which involve appreciation of flat forms, shape in only two dimensions.

• 人们把雕塑说成是一切艺术中最困难的，可能就是这个道理。当然，它比起只涉及平面形态，即二维形态的艺术品要困难些。