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niggle =bother She felt niggled by the fact he had forgotten her birthday. niggleの語源は、中英語の"nygelen"から来ており、英語で"小さな問題"を表すようになった。 この語は、現代の"nag"や"annoy"と同様の意でも使う 〜を悩ます
パス単1
Optimized studying based on the forgetting curve vastly improves memorization. - What is reminDO? Memorize 3
yusuketakky39
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