在 + 众人 + 面前 / 众人 + Verb
众人 (zhòngrén) means "everyone" or "all the people present" and is a more literary or formal way to refer to a group of people. It is commonly used in narratives and formal writing rather than casual speech, where 大家 would be more typical.
众人听了都忍不住笑了起来。
Zhòngrén tīng le dōu rěnbuzhù xiào le qǐlái.
After hearing this, everyone couldn't help but burst out laughing.
他一说完,众人纷纷鼓掌。
Tā yī shuō wán, zhòngrén fēnfēn gǔzhǎng.
As soon as he finished speaking, everyone applauded.
众人齐心协力,终于把问题解决了。
Zhòngrén qíxīn xiélì, zhōngyú bǎ wèntí jiějué le.
Everyone worked together and finally solved the problem.