Science, particularly more advanced sciences like physics or chemistry, are all about unobservables.
科学,尤其是像物理,或者化学这样较为尖端的科学,研究的都是不可观测的事物。
or how many Americans are getting advanced degrees and those sorts of things, and that's a problem.
和有多少有高级学位的人这一类东西方面,这是个问题。
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