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Sentence analysis
6Spans
Sentence
Span Details
腹をくくっ
prepare for the worst; steel oneself; accept one's fate-> 腹をくくるexpression, verb
て
connective te-formgrammar
上司
superior; boss; higher-upnoun
に
direction, time, indirect object, or target markergrammar
反論
objection; refutation; rebuttal; counterargumentnoun, suru verb
した。
light/support verb with a noun or noun-like phrase-> するgrammar