Monolingual examples (not verified by PONS Editors)

English
By 1939 military biplanes were in the process of being replaced with metal framed monoplanes, often with stressed skins and liquid cooled engines.
en.wikipedia.org
Built to the same general trimotor layout popular with manufacturers of the time, they were high-wing strut braced monoplanes with fixed tailskid undercarriage.
en.wikipedia.org

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