The flashcard defines 'aeronautics' as a noun meaning 'the branch of engineering concerned with flight' or 'aviation'.
aeronautics 是一个名词，意思是“航空学”或“航空术”。
| Front | aeronautics [aer;-o-;naut;-ics n.] |
|---|---|
| Back | n.航空学，航空术 |
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