- 换: exchange; barter; trade
- 筒子: bobbin; tube; skein; package ...
- 换筒;换筒子: creeling
- 换筒: creeling
- 筒子: bobbin; tube; skein; package; tube or tube-shaped object 枪筒子 barrel of a gun; 竹筒子 bamboo tube; 筒子楼 tube-shaped apartment; 筒子瓦 imbrex
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