1) He concerns himself with trivia.
他忙于琐事。
2) To occupy oneself with trifles.
忙于琐屑小事
3) stick at trifles
拘泥于琐事
4) go about the household chores
忙于家事
5) employ oneself in
忙于;从事于
6) He was busy with his work.
他忙于工作。
补充资料：拘泥
①固执；不知变通：～成说。②拘束；不自然：～不安。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条