Specimen可与sample换用，但常指人或物中选出的有代表性部分，或指供科研、化验或检验用的标本。 They unloaded it & took it again in right away, & an exchange electronically was performed at that instant at a register to return it & rebuy it for pick up the following day. All this I in under 5 minutes. Once i came to get it again the https://diigo.com/0zx9l4