坐直；挺直腰板坐
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坐直；挺直腰板坐；坐直；挺直腰板坐
to sit with one's back straight and upright, not slouching
She told him to sit up straight during dinner.
她让他在晚餐时坐直。
坐直；挺直腰板坐
to sit with one's back straight and upright, not slouching
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