把这一句，留给此刻的你
The movement of the emitters of the spectral lines may be deduced on the basis of the Doppler principle.
根据多普勒原理，可以推导出谱线发射源的运动规律。
A LITTLE ENCOURAGEMENT
给此刻的你，一点向前的力量。
关于学习、善意与成长，读一句，再想一想。
Silence isn't golden and it surely doesn't mean consent, so start practicing the art of communication.
沉默不是金，当然也不意味着同意，所以开始练习沟通的艺术吧。
We all have to face pain, and pain makes us grow.
我们都要面对痛苦，痛苦让我们成长。