different、difficult的区别、用法

different adj.
不同的 各别的, 差异的 [常作表语]
as different again 又大不相同(指向好处转变的差异) as different as chalk from cheese (尽管外表相似)本质上完全不同
be different from 与...不同
be different to 与...不同
be different than 与...不同
The two boys are dif