She is a chemical engineer, a medical doctor,a college professor, and in 1992, was the first African-American woman astronaut to go into space.
VOA: standard.2010.03.26
You could be a chemical engineer.
你就可能成为一个化学工程师。
Now, if you're an engineer, and you use the ideal gas law to design a chemical plant or a boiler or an electrical plant, you know, a steam plant, you're going to be in big trouble.
比如说锅炉,蒸汽机,我们会遇到一个大问题:,我们设计的机器将无法运作,因为对大部分实际气体。
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