Collins Chinese Dictionary Plus (3rd edition), 2011:
前后(後) qiánhòu 名
1
(=时间接近)
- 春节(節)前后(後) chūnjié qiánhòu around the time of the Spring Festival
- 暑假前后(後) shǔjià qiánhòu summer holiday time
2 (=自始至终)
- 创(創)作这(這)部小说(說),前后(後)用了3年时(時)间(間)。 Chuàngzuò zhè bù xiǎoshuō,qiánhòu yòngle sān nián shíjiān. Creating the story took three years from start to finish.
3
(=总共)
- 他前后(後)去过(過)3次欧(歐)洲。 Tā qiánhòu qùguo sān cì Ōuzhōu. He's been to Europe three times altogether.
4
(=前面和后面) the front and the back