单词	air observation
释义	air observation noun : observation from an aircraft specifically : such observation of artillery fire Word History First Known Use 1916, in the meaning defined above
随便看	robusticity robustious robustiously robustiousness robustiousnesses robustlier robustliest robustly robustness robustnesses robustuous roc Roca, Cape rocaille rocailles rocambole rocamboles Roccella roccellaceaes roccellae roccellas roccellic acid roccelline rocci Roccus

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