单词	air stack
释义	air stack noun : planes circling at different assigned altitudes above an airport while waiting their turn to land Word History First Known Use circa 1957, in the meaning defined above
随便看	penicillamines penicillate penicillated penicillations penicillia penicilliform penicillin penicillinase penicillinases penicillinic acid penicillins penicillium penicilliums penicils Peniel Mission peniform penile peniler penilest penillion pening peninsula peninsula pine peninsular Peninsular Malaysia

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