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Training the elements of free landing with the help of a special carriage.
训练用一种特殊运输工具来实现自由着陆
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Smokersnonsmokers can not be equally free in the same railway carriage.
吸烟者和不吸烟者在同一节车厢里无法享受同样的自由。
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Smokersnonsmokers can not be equally free in the same railway carriage.
吸烟者和不吸烟者在同一节车厢里无法享受同样的自由。
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