adequate,sufficient,enough.都有“足够的”意思,三者有何区别?
题目
adequate,sufficient,enough.都有“足够的”意思,三者有何区别?
答案
enough a.1.足够的,充足的 We have enough chairs for everyone.我们有足够的椅子让大家坐.I was fool enough to trust him.我真傻,竟会信赖他.n.1.足够,充分[+to-v][(+for)] We earned enough to buy a new house....
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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