单词：syndrome of upper excess and lower deficiency
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介绍: at the top 最上面 at the bottom 最下面 in the upper half 上半部分 in the lower half 下半部分 on the left side 在左边 on the right side 在右边 on the far left 在最左边 on the far right 在最右边 on the top left corne
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root position 原位 first inversion 第一转位 second inversion 第二转位 third inversion 第三转位 sixth chord 六和弦 sixth-four chord 四六和弦 seventh chord 七和弦 dominant seventh chord 属七和弦 diminished seventh chord 减七
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今天我们要学的习惯用语有共同的关键词: lip。大家都知道lip是嘴唇。嘴唇可是我们身上忙碌的器官，我们说话，吃喝都得靠嘴唇帮忙。嘴唇还帮我们传情达意。难怪由lip这个词发展而来的习惯
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