这句子英文如何表达这份问卷调整后,保洁公司可以在三个月后再重新进行一次市场调研,地点定在不同的超市门口,最重要的是调研的样本量要增加.

After the questionare adjusted,The cleaning company can do another maket survey in three month.The places can be at diffrent supermaket gates.What's most important is that the number of the resopndents should be large.