staplen.U形(订书)钉；主要产物(要素)；原料(地)adj.主要的；重要的vt.用订书机装订Staple Food Can't Be Replaced细胞吞噬staple-fibre washing machine人造短纤维清洗机staple-fibre cutting machine人造短纤维切断机staple food processing equipment主食加工设备Staple capsulorrhaphy of shoulder肩关节钉合关节囊缝术staple and non-staple food supply主副食供应staple functional zoning construction主体功能区建设

1. Can you tell me the main item you export?
   请告诉我你们出口的主要商品好吗？
2. Popcorn became a staple at movie theaters during the Great Depression.
   在大萧条期间，爆米花儿成了影剧院内的主要商品。