Before using these materials, whether the customer can mix __the__G3+BD+S5 (mix fully)first_ly_ and then pour them in a kettle and pour the MG1 to another kettle (or not). Finally, do the casting.
1:G3BDS5前面加the
2:firstly去掉ly,如果是句子开头用firstly,否则用first
3:whether or not 的意思是是这样还是不是这样,加上词表示一个主语,是集合名词,后面应该有谓语,而且中文请对方做某事用英文说应该是would you like to do sth(您可以做sth么?）