英语翻译
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英语翻译
比如有道,简直乱七八糟
At one time or another most farmers have problems with mice.This is especially true for grain farmers.Mice eat a lot of grain.They also carry diseases(疾病),which people can get from eating or touching grain the mice have made dirty.Farmers can use special grain storage building or they can kill the mice.However,both methods can be costly.Farmers must buy materials to build the special grain storage buildings or chemical poisons to kill the mice.
Here is a way to kill mice without spending a lot of money.It is a simple but effective king of mouse trap.The method is first used by some farmers in the west African country of Mali.An agricultural expert in Mali reported about the Mali mouse trap in a magazine.The expert reported that his gardener caught 150 mice in just one night.The gardener used four traps.The trap is easy to make.First,remove the top from a 20 liter metal or plastic container(容器).Put it n a hole in the ground.The top edge of the container shou
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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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