trebuchet
柯林斯词典
1. N a large medieval siege engine for hurling missiles consisting of a sling on a pivoted wooden arm set in motion by the fall of a weight (中世紀的)拋石機
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1. N a large medieval siege engine for hurling missiles consisting of a sling on a pivoted wooden arm set in motion by the fall of a weight (中世紀的)拋石機