一 + 伙 + Noun (people)
伙 (huǒ) is a measure word used to classify a group of people, often with a negative or informal connotation such as a gang or band. It is typically used with 一 (one) to mean "a group of" or "a gang of."
一伙小偷趁夜晚闯进了商店。
yì huǒ xiǎotōu chèn yèwǎn chuǎngjìn le shāngdiàn.
A gang of thieves broke into the store under cover of night.
公园里有一伙年轻人在打篮球。
gōngyuán lǐ yǒu yì huǒ niánqīngrén zài dǎ lánqiú.
There's a group of young people playing basketball in the park.
警察正在追捕那一伙抢劫犯。
jǐngchá zhèngzài zhuībǔ nà yì huǒ qiǎngjié fàn.
The police are pursuing that gang of robbers.