连声

yīng gāi lián shēng dā ying

应该连声答应

should repeat one's answer time and again

lián shēng gǎn xiè

连声感谢

thank somebody profusely

tā lián shēng zhòu mà

她连声咒骂。

She let out a stream of invective.

lián shēng zài jiàn

连声再见

say goodbye again and again