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当小行星进入地球大气层时,它们就变成了流星,当它们撞到地面时,它们就是陨石。
dāng xiǎoxíngxīng jìnrù dìqiú dàqìcéng shí, tāmen jiù biàn chéng le liúxīng, dāng tāmen zhuàng dào dìmiàn shí, tāmen jiùshì yǔnshí.
When asteroids enter Earth's atmosphere, they become meteors and when they hit the ground they are meteorites.
Source: CCMatrixWhy are you sighing?
Source: OpenSubtitlesHow does climate change affect the Earth?
Source: CCMatrix