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to feel ashamed
自分の力不足を慙じながらも前に進む決意をした。
While feeling ashamed of my shortcomings, I resolved to move forward.
先人の偉業と比べて己の小ささを慙じた。
I felt humbled by my own insignificance compared to the great deeds of predecessors.
無責任な行動をとったことを深く慙じている。
I am deeply ashamed of having acted irresponsibly.