blanket bombing
noun [ U ] uk/ˈblæŋ.kɪt ˌbɒm.ɪŋ/ us/ˈblæŋ.kɪt ˌbɑː.mɪŋ/
地毯式轰炸
the act of dropping a lot of bombs over a large area such as a city, without aiming for any particular buildings
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