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- 现在我们说起话来好像有点理不直气不壮的样子，因为群众吃得不好，穿得不好，住得不好。 It seems we are not sure of ourselves when we speak nowadays because we have failed to provide the people with good food,clothing and shelter.
- 有理直纹面 rational ruled surface
- 测定平直气轨的粘滞性阻尼常数 Determining the Viscous Damping Constant of the Level Air Cushion Track
- 气 smell
- 山：（向葛莱古里旁白）要是我说是，那么打起官司来是谁的理直? SAMPSON: (Aside to GREGORY) Is the law of our side, if I say ay?
- 状 suit
- 气状 gaseity
- 不理 refuse to acknowledge
- 理工 science and engineering
- 柱状图 histogram
- 一口气 in one breath
- 直销 direct marketing; door-to-door sale
- 副理 assistant manager
- 口气 (friendly or unfriendly) tone (of comments)
- 直发 straight hair
- 线状 striation
- 理事 (n) councilman
- 直的 straight
- 柱状 prismatical
- 烟气 flue gases
