When the chains are long, you can drap them along the ceiling or stair rail.
当链长，你可以德拉沿着天花板或楼梯扶手他们。
The international's network says its schools have average drap out rate have just 5%.
国际交流网络工程说，它们学校的平均辍学率只有5%。
The international's network says its schools have average drap out rate have just 5%.
国际交流网络工程说，它们学校的平均辍学率只有5%。
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