后边加句号，例如：
1、They sell a wide range of domestic appliances ─ washing machines， dishwashers and so on.他们出售各种家用电器——洗衣机、洗碗机等等。
2、We discussed everything ─ when to go， what to see and so on.我们什么都商量过了——什么时候走、看什么等等。
3、Right now in Congress， they're fiddling around with the budget and so on.此时在国会，他们正就预算案等等瞎折腾。
