He took a few deep breaths to recollect himself before the interview.

recollect 由前缀 re-（表示"重新"）和 collect（收集）组成，字面意思是"重新收集"。 在心理层面，recollect 引申为"使镇定、使恢复平静"，指通过深呼吸等方式让分散的注意力或情绪重新集中起来。