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一秒率 / いちびょうりつ : 1）forced expiratory volume one second percent 2）% in 1 second 3）FEV1.0%
一秒量 / いちびょうりょう : 1）forced expiratory volume in 1 second 2）forced expiratory volume one second
一秒 / いちびょう : n 1）one second
一瓶 / ひとびん : n adj-no 1）one bottle
一笑 / いっしょう : n vs 1）laugh 2）smile
一筆 / いっぴつ / ひとふで : n-adv n-t 1）a few lines 2）stroke of pen
一等 / いっとう : n adj-no 1）first-class 2）first-rank 3）A1 4）the most 5）the best
一等兵 / いっとうへい : n 1）private (e-2) 2）pfc
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一秒率

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