名词
中文翻译：相对论质量
同义词：
['相对质量，质量例句：1. The mass of the planet is determined by its distance from the sun.（行星的质量由它离太阳的距离决定。）2. The mass of the universe is a fundamental constant that affects everything.（宇宙的质量是一个基本常数，影响着一切。）3. The mass of the object is 50 kilograms.（物体的质量是50千克。）']
例句：
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1. The mass of the planet is determined by its distance from the sun.
行星的质量由它离太阳的距离决定。
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2. The mass of the universe is a fundamental constant that affects everything.
宇宙的质量是一个基本常数，影响着一切。
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3. The mass of the object is 50 kilograms.
物体的质量是50千克。