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Let's try to measure the length between perpendiculars.
让我们试着测量垂线间距。
youdao
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It is normal if two hands are in a line and perpendiculars to the floor.
标准姿势就是两只手在一条直线上与地面成直角。
youdao
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It is normal if two hands are in a line and perpendiculars to the floor.
标准姿势就是两只手在一条直线上与地面成直角。
youdao