Inca builders cut stones to exact sizes

so that

so that

nothing was needed to hold walls together

other than

other than

the perfect fit of the stones.
印加的建筑工人把石頭切成精準(zhǔn)的建造尺寸，這樣的話不需要任何其他東西支撐墻壁，只用石頭就構(gòu)成了完美的結(jié)構(gòu)。