My parents always teach me to know the importance of study hard and not only do the things I like.

我父母亲总是教育我努力学习的重要性，不要只做自己喜欢做的事。

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Now, I only think I want to study hard and not waste time. Only in this way will my study become good.

现在，我只想我要努力学习，不要浪费时间。只有这样我的学习才会变的更好。

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To reach my dream, I have to study hard and learn more relative knowledge, because I know that being an astronaut is not an easy thing.

为了实现我的梦想，我要努力学习，并且学习更多的相关知识，因为我知道成为一名宇航员并不是件容易的事。

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