表现出热情就有可能显得不科学、不客观；这是为了迎合学生的情感而不是他们的智力。
To show enthusiasm is to risk appearing unscientific, unobjective; it is to appeal to the students' emotions rather than their intellect.
而实际生产中相互干扰的因素甚多，很难准确的建立各参数之间的数学模型，工艺参数的获得不准确、不科学。
Whereas, there are many influential factors in practical production, it is difficult to set up the arithmetical model among the factors correctly and the result is not exact and scientific.
繁忙工作、不充足睡眠已经成为健康早餐的头号大敌，而长期不吃或不科学地吃早餐恰恰会对身体健康造成严重的危害，还会令人发胖。
Busy working, don't get enough sleep has become a healthy breakfast, and long-term enemy's not eat or not to eat breakfast just for health will cause serious harm, still can make a person get fat.
繁忙工作、不充足睡眠已经成为健康早餐的头号大敌，而长期不吃或不科学地吃早餐恰恰会对身体健康造成严重的危害，还会令人发胖。
Busy working, don't get enough sleep has become a healthy breakfast, and long-term enemy's not eat or not to eat breakfast just for health will cause serious harm, still can make a person get fat.
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