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1将谷物盒裁成6厘米宽的纸条。用胶带纸将两头粘连起来,成为一个长条。你需要两根这样70厘米长、6厘米宽的纸条。这就是你的1号大桥和2号大桥的桥面。
1 Cut the cereal box into 6 cm wide strips. Stick the two ends together with tape to make a strip. You need two such 70 cm long and 6 cm wide paper strips. This is the bridge surface of your No. 1 Bridge and No. 2 Bridge.