Science has shown us through measurement, observation and experimentation that there are four forces in the Universe: electromagnetism, strong interaction, weakinteraction 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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Yang and his colleague Li Zhengdao received the 1957 Nobel Prize in Physics for their work on parity nonconservation of weakinteraction, becoming the first Chinese to win a Nobel Prize.