a mass of是什么意思We took _____ pictures of themA> many of B. masses ofc. a large amount of 为什么是用a mass of ?

a mass of是什么意思We took _____ pictures of themA> many of B. masses ofc. a large amount of 为什么是用a mass of ? a mass of是什么意思及用法 when we want to move a body of great mass,we must apply a great the mass of 与 a mass of 有啥区别? mass的用法the mass of 和 a mass of 有什么区别？ a mass of =masses of吗? MASS,是什么意思 a mass of 的近义词和词性 a mass The elements of a compound occur in a fixed mass ratio.请问fixed mass ratio a mass of 怎么用还有masses of 英语翻译2.Too hardly we underestimate the power of a kind word（too what a mess 和what a mass各是什么意思? It is nothing short of a mass exodus. 含义同上! a mass of ）a mass of可以修饰可数名词伐若可以,举3个例子给我 英语翻译Inside the Living Cell :Structure and Function of Internal cell parts1.Cytoplasm:The Dynamic,Mobile FactoryMost of the properties we associate with life are properties of the cytoplasm.Must of the mass of a cell consists of this semifluid we have been producing too many of the gases which后面的which是什么意思.为 mass mobilization是什么意思