It is a grave mistake theorize before one has data.

It is a grave mistake to theorize before one has data.

在尚未掌握数据资料之前建立理论,是一种严重的错误.

What's important is to get things done, not to theorize about them.

重在做, 不在说空话!

Galileo theorized the motion of the stars.

伽利略建立了星球运动理论.

The scientific men shook their heads and theorized.

那批研究科学的人都摇着头,提出他们的理论.

Researchers have theorized that sleep may restore some chemical that is drained during periods of wakefulness.

一些研究人员提出的理论认为,睡眠可以恢复人在不睡觉时失去的某些化学物质.

Language and narrative have been theorized to contribute to nationalist thought and practice in two ways.

语言和叙事推动民族主义思潮及民族主义和行为,有两个理论说法.

Of course he theorized a little about his attachment.

不言而喻,他为他的爱情找出了一些理论根据.

He thinks and theorizes all day.

他整天都在思考、推理.

This was no time for theorizing.

现在不是谈理论的时候。

He to whom the Eternal Word speaks is free from theorizing.

永生圣言亲自发言教导的人,不会费心建构理论.

Five scholars are theorizing about the best system of education in this poor country.

有五位学者正在论证这个穷国的最佳教育体制.

...graduates who are well-trained in both the theory and practice of statistics.

在统计学理论和实践两方面都训练有素的毕业生

Marx produced a new theory about historical change based upon conflict between competing groups...

马克思创立了一种新理论，认为历史的演变是基于对立集团之间的冲突之上的。

He is too old to go to school.

他太老了,不能去学校了.

My theory about divorce is that it's not the split-up that damages children, it's how it is handled.

我对离婚的看法是，伤害孩子的不是婚姻的破裂，而是处理离婚的方式。

I have this theory that most people prefer being at work to being at home.

依我看，多数人喜欢工作而不愿待在家里。

In theory, these machines should last for ten years or more.

从理论上讲，这些机器应能用十年以上。

the theory and practice of language teaching

语言教学理论与实践

That sounds fine in theory, but have you really thought it through?

这话听起来很有道理，但是你真正全面考虑过没有？

He taught us music theory.

他教我们乐理。