请问“Size of QC Staff,”“Size of R&D Staff”这两个英文是啥意思!

请问“Size of QC Staff,”“Size of R&D Staff”这两个英文是啥意思! 这两个staff什么意思 a staff of energetic employees什么意思 what size what size of 翻译：motivated staff of employees 是what size of pizza还是what size pizza our shoes are different().A.of size B.on size C.about size D a third size of 中文是四分之一的意思吗 the best existence manual of staff中文意思 a senior member of staff的中文意思  Reduced use of staff (cont.) Bread is the staff of life.