Example
lěng bu fáng冷不防，lǎo shī老师ràng让měi ge每个guó jiā国家de的xué sheng学生yòng用huà tǒng话筒gěi给dà jiā大家jiǎng讲yí xià一下zì jǐ自己lái来hā哈ěr尔bīn滨de的yuán yīn原因。
冷不防，老师让每个国家的学生用话筒给大家讲一下自己来哈尔滨的原因。
Without warning, the teachers ask students from each country to take the microphone and explain to everyone their reasons for coming to Harbin.