一心不乱 (いっしんふらん) — wholeheartedly; with heart and soul; intently; with undivided attention; with intense concentration; single-mindedly
一心不乱
い っ し ん ふ ら ん
い っ し ん ふ ら ん
Wholeheartedly; with heart and soul; intently; with undivided attention; with intense concentration; single-mindedly
自分
の
仕事
に
一心不乱
に
打
ち
込
みなさい
。
Give yourself to your work with body and soul.
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