Examples
ràng让wǒ men我们xiàn zài现在huí dào回到zhèng tí正题shàng hǎo上好bù hǎo不好？
让我们现在回到正题上好不好？
Can we get back to the topic?
我们照例寒暄了一阵，闲扯扯队里的新闻以后，他在不知不觉中就把谈话引入了正题。
We exchanged pleasantries, and chatted cordially about news in the team, and he moved the conversation naturally on to the main topic.