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   English
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linchpin ['lɪnʧ'pɪn] n
gen. 开口〔保险〕销; 车辖; 关键; 枢纽; 关键性人物〔事物〕
oil 制轮楔
space ; 开口销; 保险销
sport. 主力
tech. (栓); 锚杆销; 车轴销
 English thesaurus
linchpin ['lɪnʧ'pɪn] abbr.
abbr. lynchpin (Pickman)