From spectral lines, the composition of nebulae.

从谱线看，星云的组成。

And together Kirchhoff and Bunsen went on to show that many individual elements' spectral lines matched those missing lines in the sun's spectrum.

基尔霍夫和本森一起证明了许多元素的光谱线与太阳光谱中缺失的光谱线相匹配。

Bohr's atomic model resolved several unanswered questions, including the stability of atoms and the reason behind spectral lines observed in the light emitted by heated elements.

玻尔的原子模型解决了几个悬而未决的问题，包括原子的稳定性以及在加热元素发出的光中观察到的光谱线背后的原因。

Compared to our sun, their spectral lines were all shifted to the red end of the spectrum, which seemed to suggest there were a bunch of fuzzy objects in space hurdling away from earth.

与我们的太阳相比，它们的光谱线都转移到了光谱的红色一端，这似乎表明太空中有一堆模糊的物体正在远离地球。