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to throw violently against; to slam against; to strike; to slap something onto; to dash (e.g. to the floor)
to thrust at someone (e.g. a letter)
怒りで書類を机に叩き付けた。
He slammed the documents on the desk in anger.
雨が窓を叩き付けている。
Rain is lashing against the window.
辞表を上司の机に叩き付ける覚悟だった。
I was prepared to slam my resignation letter on my boss's desk.