在活动期间，电子邮件纷至沓来。

Emails were arriving ___thick ___and ___fast during the campaign.

产品发布后，投诉接踵而至。

Complaints poured in ___thick ___and ___fast after the product launch.

在头脑风暴会议中，想法层出不穷。

Ideas were generated ___thick ___and ___fast in the brainstorming session.