单词	sky marshal
释义	sky marshal noun : an armed federal officer in plain clothes who is assigned to prevent skyjackings : air marshal sense 2 Word History First Known Use 1964, in the meaning defined above
随便看	permitting (of) permitting of permittivities permittivity permix Permo- perms permselective permutabilities permutable permutablenesses permutate permutated permutates permutating permutation permutation group permutation lock permutation table permutational permutations permutator permute permuted permuters

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