| 词汇 | sky marshal |
| 释义 | sky marshal noun [ C ] uk/ˈskaɪ ˌmɑː.ʃəl/ us/ˈskaɪ ˌmɑːr.ʃəl/ 空中便衣警官 an official person dressed in ordinary clothes, who carries a gun on an aircraft and whose job is to protect other passengers |
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