这就为研究激光的工作人员出了一个难题：如果能量输出有两种形式，他们怎样运用电荷守恒和能量守恒定律呢？
This posed a conundrum for researchers working with the laser: How were they to apply the laws of conservation of charge and conservation of energy with two forms of energy output?
杨振宁和李政道因为在弱相互作用下宇称不守恒原理方面的工作获得了1957年的诺贝尔物理学奖。
Yang received the 1957 Nobel Prize in Physics together with Tsung-dao Lee, for their work on parity non-conservation of weak interaction.
杨振宁及其同事李政道因在弱相互作用中宇称不守恒方面的工作获得了1957年的诺贝尔物理学奖，成为第一个获得诺贝尔奖的华人。
Yang and his colleague Li Zhengdao received the 1957 Nobel Prize in Physics for their work on parity nonconservation of weak interaction, becoming the first Chinese to win a Nobel Prize.
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