different age不同年龄differentadj.不同的；差异的；分别的；各不相同的different evolution stages不同构造阶段differentiation of horizon发生层异化different fixation methods不同杀青方法differentiable coordinates可微分坐标different classes of drugs不同种类的毒品different ecological zones不同生态区Differentiation-inducing诱导分化different-level teaching分层教学Different aqueous solution不同水体different teaching methods分层教学