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单词
physical demand level
释义
physical demand level
phys·i·cal de·mand lev·el
(
fiz'i-kăl dĕ-mand' lev'ĕl
)
The U.S. Department of Labor defines five uniform levels: sedentary, light, medium, heavy, and very heavy.
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更新时间:2024/12/24 4:16:34