参考翻译答案如下：

1. Well , to start the ball rolling , how about lunch ?

2. You can set the ball rolling by asking: "So what were you hoping I could achieve for you here today?"

3. To start the ball rolling, we will provide you with price lists, catalogues and some samples.

4. Well, to get the ball rolling, I agree to make some concession. I will adjust the price according to the amount of your order.