双人竖拉大锯一种锯木头的大锯，一人站在木头上，一人站在坑内一起拉锯。
A large headsaw for cutting logs, operated jointly by a person standing above the log and another in a pit underneath.
双人竖拉大锯一种锯木头的大锯，一人站在木头上，一人站在坑内一起拉锯。
A large headsaw for cutting logs, operated jointly by a person standing above the log and another in a pit underneath.
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