溯
長吉は同じようなその冬の今年と去年、去年とその前年、それからそれと幾年も溯って何心なく考えて見ると、人は成長するに従っていかに幸福を失って行くものかを明かに経験した。
When Chokichi thought listlessly about this winter, and the similar winter before and the one before that, he vividly experienced the fact that as people grow older, they gradually lose their happiness.
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The search results are provided by the wonderful Jisho API which itself uses various data sources which you can find on the jisho's website. The data concerning the kanji strokes are provided by the KanjiVG project, under the CC BY 3.0 FR license. I also use Tatoeba to provide example sentences and Kuroshiro to obtain the furiganas and romajis versions of the sentences.
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