Free bass accordions 自由低音手风琴
Free Bass 自由基地 ; 自由低音
Free Bass Accordion 自由低音手风琴
keyboard-free bass accordion 键盘式自由低音手风琴
Free bass accordion, developed from the traditional accordion, is a more expressive musical instrument.
自由低音手风琴是在传统手风琴的基础上发展起来的一种具有更加丰富表现力的乐器。
参考来源 - 自由低音手风琴与作品概论·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
The emergency of free bass accordion, which broadened the range of repertoires played on accordions, made it possible to accurately master polyphonic works created by composers like Bach.
自由低音手风琴的出现，拓宽了手风琴演奏曲目的范围，使准确演奏巴赫等作曲家的复调作品成为可能。
We need more good teachers-right now, there are only a half a dozen who can play the free bass with ease.
我们现在需要很多好老师，只要有五六个能够熟练地演奏低音乐器的就行了。
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