本文通过计算指出，若微扰只与时间有关，则体系的波函数可以精确求解，从而得到跃迁概率振幅的精确表达式。
It is pointed out that the wave function of system can be exactly solved if the perturbation only depends on the time, and the exact expression of transition probability amplitude can be obtained.
若一个女人微侧脑袋露出脖颈，则是一种显示脆弱和温顺的信号。
A woman tilts her head and shows off her neck as a sign of vulnerability and submission.
潘石屹先生的建议得到一位摄影记者唐若丁（译者按：微博名称为“唐若丁9983”）的意外回复。
Mr Pan’s suggestion generated an unexpected response from Tang Ruoding, a photojournalist.
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