The principal thing in this world is to keep one's soul aloft. -gustave Flaubert, French write.
人生在世首要的大事是要保持灵魂的高洁。—居斯塔夫·福楼拜，法国作家。
For the principal thing, that hath been the destruction of most plantations, hath been the base and hasty drawing of profit, in the first years.
当然，如果迅速的利润能与殖民地底利益相符，那自然是不可忽视的，但应以此为限，不可多求。
In the grammatical sense, this word is the means or principal of predication whereby we say one thing is another thing: the mare is the female of the horse, for example.
从语法的角度来看，is这个词是，我们声明一个东西是另一个东西的方式或者？委托：，例如说，母马是马中的雌性。
People work hard to fulfill their principal necessities, and food is the one thing that is really important to their survival.
人们努力工作从而获得主要的必需品。食物是他们生存下来的重要的东西之一。
But this situation is not static, the principal and the non-principal aspects pf a contradiction transform themselves into each other, the nature of the thing changes accordingly.
然而这种情形不是固定的，矛盾的主要方面和非主要的方面互相转化着，事物的性质也就随着起变化。
The principal told us that planting trees was important. Scientists tell us the same thing today.
校长告诉我们，植树意义重大，今天的科学家们也在告诉我们同样的道理。
My mother (a brilliant teacher and school principal) once told me, "Always give kids a way out – a way for them to do the right thing."
我妈妈（一位优秀的老师和校长）曾告诉我：“要给孩子们留一条出路——让他们可以做正确的事情。”
The preview looks similar to interfaces which are already on the market and this is not a bad thing, explained Tony Cripps, principal analyst at Ovum.
预览类似于接口目前已经在市场上，这不是一件坏事，托尼解释克里普斯，Ovum的首席分析师。
The preview looks similar to interfaces which are already on the market and this is not a bad thing, explained Tony Cripps, principal analyst at Ovum.
预览类似于接口目前已经在市场上，这不是一件坏事，托尼解释克里普斯，Ovum的首席分析师。
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