词典释义：
双语例句
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Astronomers are finding many worlds now in a category of wolds called Super-Earths, which are between 2 and 10 times the mass of our own Earth.
天文学家们现在正在寻找一些质量是我们地球的2到10倍之间的行星用一系列的词来说明就叫做超级地球。