The sun came up for a new day. Christopher would run and play. But more than this wonderful place, he loved to be with his best friend, Mandy.

新的一天太阳升起。克里斯托弗会跑、会玩。但是与这个好地方比起来，他更喜欢和他最好的朋友曼蒂在一起。

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Later, a friend of his had the idea that rubber might be made hard and strong if mixed with sulphur and put in the sun.

后来，他的一个朋友发现在橡胶里掺入硫磺，经过日晒，可以使橡胶变得又硬又结实。

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Later, a friend of his had the idea that rubber might be made hard and strong if mixed with sulphur and put in the sun.

后来，他的一个朋友发现在橡胶里掺入硫磺，经过日晒，可以使橡胶变得又硬又结实。

youdao