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- One can make a plausible guess as to how to get the proper equation for quantum mechanics from classical mechanics. 我们可以似乎合理地推想如何从经典力学得到量子力学的适当方程。
- If you are up to it, you can derive the proper equation yourself by solving the calculus differential equation for a curve with a constant angle between the radial and tangent vectors (HUH?). 通过解一个微积分等式：曲线的射线与切线形成的角度是恒量，可以自己得出正确的方程式。
- I advise waiting till the proper time. 我建议等到适当的时候。
- I do not think it's proper for you to behave so. 我认为您这样的举止不合体统。
- It's not proper for you to catch him up very short. 你突然打断他的话是不恰当的。
- She's not at all a proper person for you to know. 她可不是正派人，你不应该结识她。
- She hadn't had a proper holiday for years. 多年来她都没有过真正的假期。
- The company does not take proper fire precaution. 公司未采取正当的防火措施。
- I can't make this equation come out. 我不会解这个方程式。
- Water is not a proper substitute for wine. 水不是酒的适当代用品。
- The pages aren't in proper order. 这些页数次序不对。
- Recycling is the only proper way. 循环再生是惟一的好办法。
- It's hard to get at the spark plug without a proper wrench. 没有一把合适的扳钳，要抓住那个火花塞是困难的。
- I made a proper balls-up of that exam. 那次考试我考得一塌糊涂。
- Lack of proper food often stunts a child. 缺少适当的食物常常阻碍小孩的发育成长。
- What does x represent in this equation? 这个方程式中的x代表什么?
- Many young people think old people are too proper. 许多年轻人认为老人太循规蹈矩。
- He could not come up with a proper answer. 他想不出一个合适的回答。
- Proper nouns are spelled with a capital letter. 专有名词用大写字母。
- She lay great stress on proper behavior. 她很强调行为端正。
