墙上若有一处挑出的台、面积四掌见方,人靠着它搁一道梯子、宽窄不拘,那梯子的横级若彼此相隔不到三掌,他就借这梯子和挑台削减了墙的高。
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墙上若有一处挑出的台、面积四掌见方,人靠着它搁一道梯子、宽窄不拘,那梯子的横级若彼此相隔不到三掌,他就借这梯子和挑台削减了墙的高。
If a projection four by four handbreadths in area extends from a wall, and one placed a ladder of any width against it, if the rungs of the ladder are less than three handbreadths apart, he has diminished the height of the wall by means of this ladder and projection.