The comparable speed from the Moon is only 1.5 miles per second1. The comparable speed from the Moon is only 1.5 miles per second.而从月球出发的相应速度史是每秒......
未完，继续阅读 >The reason lies in its gravity1. The reason lies in its gravity.其原因在于月球的重力。2. Because the Moon has only an eightieth of the Earth's mass,因为月球的......
未完，继续阅读 >But even in the most favourable circumstances1. But even in the most favourable circumstances即使是在最有利的环境中，2. only a small fraction of the creatures t......
未完，继续阅读 >新概念英语：基数词用来表示事物的数量的词叫做基数词，如说five books(5本书)，其中的five就是基数词;又如twenty years(20年)，其中的twenty也是基数词。 1. 表示基数词......
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