The result shows that, in the bass and median tone of piano, the timbre will be improved if the 7th and 9th harmonics are attenuated for either single-key, third harmony, fifth harmony or triad chord.
实验结果表明，在钢琴的中低音区，不论是单键发音，还是三度和声、五度和声或三度和弦，令第七、第九次谐波的幅度衰减，均能使钢琴声音的音质有所改善。
In the early spring of Gibby's fifth grade year, I held an exercise class on the playground during recess for anyone who wanted to tone up8 their winter-weary muscles.
在吉比五年级的那年早春，我利用课间休息的时间在操场上给大家开了健身课，谁想要锻炼一下冬天里松懈了的肌肉都可以参加。
In the early spring of Gibby's fifth grade year, I held an exercise class on the playground during recess for anyone who wanted to tone up8 their winter-weary muscles.
在吉比五年级的那年早春，我利用课间休息的时间在操场上给大家开了健身课，谁想要锻炼一下冬天里松懈了的肌肉都可以参加。
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