a flood of words 口若悬河

a wisp of a smile 一丝微笑

a burst of laughter 一阵笑声

a flood of tears 泪如泉涌

a train of thoughts 一连串的想法

a piece of information 一条消息

a glimmer of hope 一线希望

a network of railroad 铁路网

a flood of people 人潮如涌

a piece of advice 一条建议