/ˈpɑ:sɪŋ ||; ˈpæsɪŋ/noun [U] the process of going by 经过；过去；流逝: the passing of time 时间的流逝 in passing done or said quickly, while you are thinking or talking about sth else 顺便；附带；粗略地: He mentioned the house in passing but he didn't give any details. 他顺带提到那幢房子，但没有详述。