"My door is open but irrespective of whether or not any Republicans , and I do think there will be , I am going to move forward anyway,".

VOA: standard.2009.09.10

Chemistry and biology, physics has the advantage that the desktop experiments can do are relatively straight forward than not dangerous.

化学和生物的话，物理有一个好处就是,桌面实验能做到,直观却不危险,地反映结果。

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