Nor is the global economy forgiving of an American workforce with increasingly weak literacy, math and science abilities.
全球经济也无法容忍美国劳动人口的读写、数学和科学能力越来越弱的现实。
I was always weak in the science subjects.
我总是学不好理科。
Science has shown us through measurement, observation and experimentation that there are four forces in the Universe: electromagnetism, strong interaction, weak interaction and gravitation.
科学早就通过测量、观察和实验告诉我们宇宙中有四种力：电磁力、强相互作用力、弱相互作用力和万有引力。
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