On the base of previous work, we put forward an integrated and open able instruct system with the purpose that impregnates the new content into the research of middle school"s chemistry teaching."

从而提出了一套相对完整的、操作性较强的中学化学教学中环境教育实施的指导体系，以期为环境教育实施的研究注入新的内容。

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On the other hand, survey questionnaire are adopted to get the situation of environmental education. So it is necessary to develop environmental education in middle school"s chemistry teaching."

另一方面，通过问卷调查了解环境教育的现状，得出开展环境教育的必要性，并采用教学案例说明如何在中学化学教学中开展环境教育。

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That's why I'm teaching chemistry. Electrochemistry is the most important branch of chemistry.

那就是我教化学的原因，电化学,则是化学最为重要的分支。

麻省理工公开课 - 固态化学导论课程节选

You might say, well what's the person who studied chemical metallurgy doing teaching chemistry here? Well, after my Ph.D., MIT I came here as a postdoctoral fellow in 1977.

你们可能会问，这个学习,化学冶金学的人怎么会在这教,化学呢，好吧，在我拿到博士学位后，1977年我作为一名博士后来到了。

麻省理工公开课 - 固态化学导论课程节选

Here's what chemistry students know: For some reason, Caesar's dying breath, his last exhalation, has become a classic teaching tool in high school and college.

NPR: Commemorate Caesar: Take a Deep Breath!