- 打: strike; hit; knock
- 空: leave empty or blank; empty; ...
- 电报纸: telegram form; telegraph for ...
- 电报纸: telegram form; telegraph form; message form; blank; telegram blank 填写电报纸 fill in the telegraph [telegram] form; 电报纸纸条 telegraph tape
- 架空电报线: aerial telegraph conductor
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