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.
皮特·布莱克说道，他对建在上海的竖 锯国际公司做了大量市场调查。
Black, who conducts extensive marketing research for a Shanghai-based company called Jigsaw International.
皮特·布莱克说道，他对建在上海的竖 锯国际公司做了大量市场调查。
Black, who conducts extensive marketing research for a Shanghai-based company called Jigsaw International.
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