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- abbr.美元（USA dollar）；极限强度设计（Ultimate Strength Design）
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S D U服务数据单元 ; 由服务数据单元 ; 为服务数据单元 ; 产生的包成为服务数据单元
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The responsible agency, the Food and Drug Administration, has long had fewer resources and authority than its counterparts did at the U. S. D. A. 负责此项监管的机构是美国食品药品管理局，然而一直以来，美国食品药品管理局所拥有的资源与权力都比它对手，即美国农业部，所拥有的要少。 - 2
The Hyatt Regency Washington D. C. is certainly located near the U. S. Capitol building, but not as near as the hotel website's photo, taken with a zoom lens, indicates. 华盛顿凯悦的确位于美国国会大厦附近，但不像该酒店网站上用变焦镜头拍摄的照片所显示的那样近。 - 3
The known taxonomy types include NAICS, UNSPSC, SIC, or a geographic code (GEO); the known identifier types include D-U-N-S, Thomas Registry numbers, and US Tax ID. 已经知道的分类法类型包括 NAICS、UNSPSC、SIC 或地理代码（GEO）；已经知道的标识符类型包括 D-U-N-S、托马斯注册号（Thomas Registry number）及美国税号（US Tax ID）。
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