每一种样式代表一种不同的化学元素，所以光谱线的不同集合或模式意味着这颗恒星有不同的化学成分。
Each pattern stands for a distinct chemical element, and so different sets or patterns of spectral lines mean that the star has a different chemical composition.
如果所有这些成分都存在，那么天文学家们可以使用新的方法来计算测量的大小和地球和月球轨道的恒星的质量直接，研究人员说。
If all those ingredients are present, then astronomers can use the new method to calculate the star's mass directly by measuring the sizes and orbits of the planet and moon, researchers said.
不同的元素或化合物吸收并释放不同颜色的光波，通过对一个恒星的光谱进行研究，我们能够推测它可能的成分。
Different elements or compounds absorb and emit different colors or wavelengths of light, and by studying a star's spectrum, one can divine what its composition might be.
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