1) thumping down the stairs
冬冬地奔下楼梯
2) fly downstairs
飞奔下楼
4) thump the drum
冬冬地敲鼓
5) stair well underground guarding against smoke
地下防烟楼梯间
1.
Discussing about the design of adding press and delivering wind in stair well underground guarding against smoke in the high-rise civil building;
高层民用建筑地下防烟楼梯间加压送风设计
6) wintering ground
过冬地;越冬地 WG
补充资料：冬冬
1.象声词。
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参考词条