恒星的金属度用于表征它含有的“金属”的量——其实是所有比氦重的元素的量。
The metallicity of a star measures the amount of "metals" it has —that is, any element heavier than helium.
恒星的金属度用于表征它含有的“金属”的量——其实是所有比氦重的元素的量。
The metallicity of a star measures the amount of " metals" it has — that is, any element heavier than helium.
在知识受流行度和金钱支配的未来，我们无法承受之重。
We cannot afford a future in which knowledge is at the mercy of popularity and money.
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