mixture
/ˈmɪkstʃə(r); `mɪkstʃɚ/ n
1 [U] mixing orbeing mixed 混合; 混合状态.
2 [C] thing made by mixing 混合之物
a `cough mixture, ie containing several medicines 复方咳嗽药
The city was a mixture of old and new buildings. 该市是新旧建筑物的混合体.
3 [sing] (chemistry 化) combination of two or more substances which do not alter their composition 混合物
Air is a mixture, not a compound, of gases. 空气是多种气体的混合物, 不是化合物. Cf 参看 compound1 1, element 3.