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(絖) kuàng 〈书〉同“纩”。

• 优化
• 优化组合
• 优厚
• 优异
• 优弧
• 优待
• 优惠
• 优抚
• 优柔寡断
• 优游
• 优点
• 优生优育
• 优生学
• 优盘
• 优秀
• 优等
• 优美
• 优胜
• 优胜劣汰
• 优良
• 优裕
• 优质
• 优越
• 优越性
• 优越感
• be on back
• be on best behaviour
• be on call
• be on case
• be on cloud nine
• be on days
• be on duty
• be one
• be on easy street
• be one crazy woman
• be one crazy woman/be one interesting job etc
• be one interesting job
• be one short of a
• be one ... short of a ...
• be one step ahead
• be one step ahead of
• be one step ahead of sb
• be one step ahead of somebody
• be one up
• be one up on
• be one up on sb
• be one up on somebody
• be one up (on somebody)/get one up on somebody
• be on familiar terms with
• be on familiar terms with sb