I heard that you already have their own happiness,so do not often meet it,
题目
I heard that you already have their own happiness,so do not often meet it,
答案
their是your吧,那就是：我曾听说你已经拥有了自己的幸福,所以就不会再经常碰到幸福了,如果是thier意思可以改为：我曾听说你已经占有了他人的幸福,所以就不会再经常碰到幸福了.happiness还可意为幸运的,看语境啦,
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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