tā / zài / huìyì / shàng / mòbùzuòshēng / sànhuì / hòu / què / tíchū / le / xiángxì / de / gǎijìn / fāng'àn

他在会议上默不作声，散会后却提出了详细的改进方案。

He said nothing during the meeting, but afterward he proposed a detailed improvement plan.