Yes , I'm having a chemistry class.
是的，我在上化学课。
We were supposed to have a chemistry class, but Mr. Anderson was out of town for a meeting, so we had a history lesson instead.
我们本来要上化学课，不过安德森老师出城去开会，所以我们改上历史课。
We were supposed to have a chemistry class, but Mr. Anderson was out of town for a meeting, so we had a history lesson instead .
我们本来要上化学课，不过安德森老师出城去开会，所以我们改上历史课。
Craig Barrett, a former boss of Intel, sat in on a chemistry class and donated about $500,000 for teachers' bonuses on the spot.
前英特尔董事长克雷格•贝瑞特听了一堂化学课后当场捐出50万美元作为教师的红利。
The quake struck Sichuan Province and neighboring regions at 2:28 p. m. on May 12, 2008, when Xue was having a chemistry class. The floor disappeared from under him and he fell into darkness.
2008年5月12日下午2：28，四川省及其周边地区发生重大地震，地面垮塌，正在上化学课的薛枭被被埋在一片黑暗之中。
She told BuzzFeed News that her freshman chemistry class required her to use Connect, a system provided by McGraw Hill where students can submit homework, take exams and track their grades.
她告诉BuzzFeed新闻，她的大一化学课要求她使用麦格劳·希尔公司提供的Connect系统，学生可以在该系统中提交作业、参加考试并跟踪他们的成绩。
She didn't hand in her first two assignments for chemistry, which started her out in the class with a failing grade.
她头两次的化学作业都没有交，这使她开始这门课时成绩就不合格。
The first time I took a class in the chemistry lab, I was surprised to find that students were fully "armed".
第一次在化学实验室上课时，我惊讶地发现学生们都“全副武装”了起来。
When twelve-year-old John Wilson walked into his chemistry class on a rainy day in 1931, he had no way of knowing that his life was to change completely.
1931年的一个雨天，12岁的约翰·威尔逊走进他的化学教室，那会儿他完全不知道自己的生活将彻底改变。
So, that's a little bit about the chemistry that we're going to cover in this class, and now I'm going to talk a little bit about some of the policies and procedures.
以上是我们这个课程会讲到的一些内容，然后我要讲一些，关于这个课程的政策和程序，但首先让我介绍和我一起授这门课的同事。
So, you'll be learning in this class 512 a great preparation for 512, which is organic chemistry.
做有机化学需要知道的东西,你们学这门课程将为课程，也就是有机化学打下基础。
Based on the constructivism teaching theory, humanism theory and Subjectivity theory, the writer constructs a self-learning class model for chemistry teaching.
笔者以建构主义学习理论、人本主义学习理论、主体性教育理论为基础，构建了一种高中化学自主学习课堂教学模式。
Not a problem. Ah, it's nearly 8 o 'clock. I have a class, chemistry. What about you?
没问题。噢，现在快8点了，我要去上课了，化学。你呢。
Mostly. For Some lessons, for example those of geography, biology, and chemistry, they Can have a field class or a laboratory class.
大多数在教室里，有些课，比如地理。生物和化学，可以去野外或者在实验室里进行。
He lectured on chemistry to a class.
他给一个班上化学课。
I had the pleasure of meeting Andrew as a freshman when he joined the Math Team (which I co-advise), and then he took my AP chemistry class as a junior.
我很快乐在他高一的时分就见地了他，那时他参与了我指点的数学社，事先他又选修了我的AP化学课。
Additionally, offer some Suggestions in a targeted manner for examples in chemistry class-teaching in high school, combining the status of examples.
并结合举例教学的现状，有针对性地对高中化学课堂举例教学提出一些建议。
As a natural science based on experiment, experiments are especially important in the chemistry class of high school.
化学是一门以实验为基础的自然科学。化学实验在中学化学课堂教学中非常重要。
With a wealth of experience in home chemistry projects as a boy in Egypt, he sailed to the top of his class at Alexandria University.
童年时，扎威尔在埃及国内进行了很多化学实验，并由此获得了丰富的经验，这些经验使他在就读亚历山大大学时成绩在班上名列前茅。
I tried this for a trip recently and it was quite fun to do, if a bit fiddly, much like an old chemistry class at school, minus the Bunsen burner.
在最近的一次旅行中，我尝试了一下，非常有趣，不过需要手巧一点，很像以前在学校里上的化学课，只是没有实验用的本生灯(Bunsenburner)。
Six-membered silacycles are a class of important cyclic compounds in organosilicon chemistry, which have many applications in organic, organometallic, and polymer chemistry.
硅杂六元环化合物在有机硅化学中是一类重要的小分子环系化合物， 广泛应用于有机化学， 金属有机化学以及材料化学等领域。
Ferrocene and its derivatives are a class of important organometallic compounds and widely used in the field of material science, bio-medical chemistry, asymmetric catalysis.
二茂铁及其衍生物作为一类重要的金属有机化合物，广泛应用于材料科学、生物医药、不对称催化等相关领域。
Ferrocene and its derivatives are a class of important organometallic compounds and widely used in the field of material science, bio-medical chemistry, asymmetric catalysis.
二茂铁及其衍生物作为一类重要的金属有机化合物，广泛应用于材料科学、生物医药、不对称催化等相关领域。
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