想要contaminate的英文解释
题目
想要contaminate的英文解释
答案
to make a substance or place dirty or no longer pure by adding a substance that is dangerous or carries disease 污染;弄脏 例句:The drinking water has become contaminated with lead.饮用水被铅污染了.c...
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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