n.画直线用尺，直尺
Straighten both legs until they are fully extended.
挺直双腿直至完全伸展开。
From ingrained habit he paused to straighten up the bed.
出于长期的习惯，他停下来整理床铺。
A few sessions talking to a counsellor should straighten him out.
跟辅道员谈几次就会使他改正过来的.
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