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前歯, まえば, ぜんし
1. front tooth, foretooth, incisor
tbd
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出っ歯, でっぱ
1. protruding tooth, overbite, bucktooth
tbd
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なのだ, なんだ
1. it is assuredly that ..., can say with confidence that ...
2. did not ...
〜んだ句型;可以肯定地说……,可以有把握地说……