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Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
A day earlier, Hacker had flown his plastic-foam plane and its GoPro camera directly over two of Russia’s most sophisticated electronic warfare systems, a Moscow-1 and Borisoglebsky.
Source: https://www.nytimes.com/2023/09/22/world/europe/ukraine-budget-drones-russia.html